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Graphic Chip Comparison And Test Configuration

How Much Power Does Your Graphics Card Need?
By

This overview shows the graphics cards and the standard frequencies of their graphics processors (GPUs), shaders, and graphics memory (with AMD, shader and GPU frequencies are identical). If you use an overclocked graphics card (OC), it will differ from the values listed, and will have a somewhat higher power consumption. You should include this increased power consumption in assessing the necessary power supply wattage, and can add half the percentage of overclocking to the power consumption as “insurance.” For example, if the graphics card (GPU) is overclocked by 10%, then you should add 5% to the maximum power consumption of the graphics card. If you don’t know the clock rates of your video card, you can use the tool GPU-Z to read the values.

Nvidia Graphic Cards

Card Manufacturer and Chip
Code Name
Memory
GPU Frequency
Shader
Memory Clock Speed
SPs
GeForce GTX 280 SLI
GT200
1024 GDDR3
602 MHz
4.0, 1296 MHz
2214 MHZ
240
GeForce GTX 280
GT200
1024 GDDR3
602 MHz
4.0, 1296 MHz
2214 MHz
240
GeForce GTX 260
GT200
896 GDDR3
576 MHz
4.0, 1242 MHz
1998 MHz
192
GeForce GTX 260
GT200
896  GDDR3
576 MHz
4.0, 1242 MHz
1998 MHz
192
GeForce 9800 GX2
2XG92
2X 512 MB GDDR3
600 MHz
4.0, 1500 MHz
2000 MHz
2X 128
GeForce 9800 GTX +
G92b
512 MB GDDR3
738 MHz
4.0, 1836 MHz
2200 MHz
128
GeForce 9800 GTX SLI
G92
512 MB GDDR3
675 MHz
4.0, 1688 MHz
2200 MHz
128
GeForce 9800 GTX
G92
512 MB GDDR3
675 MHz
4.0, 1688 MHz
2200 MHz
128
GeForce 9600 GTX
G94
1024 MB GDDR3
650 MHz
4.0, 1625 MHz
1800 MHz
64
GeForce 9600 GT SLI
G94
1024 MB GDDR3
650 MHz
4.0, 1625 MHz
1800 MHz
64
GeForce 9600 GT
G94
512 MB GDDR3
650 MHz
4.0, 1625 MHz
1800 MHz
64
GeForce 9600 GT
G92
512 MB GDDR3
730 MHz
4.0, 1825 MHz
1944 MHz
128
GeForce 8800 GTS OC
G92
512 MB GDDR3
650 MHz
4.0, 1625 MHz
1944 MHz
128
GeForce 8800 GTS SLI
G92
512 MB GDDR3
650 MHz
4.0, 1625 MHz
1944 MHz
128
GeForce 8800 GT SLI
G92
1024 MB GDDR3
600 MHz
4.0, 1500 MHz
1800 MHz
112
GeForce 8800 GT
G92
1024 MB GDDR3
600 MHz
4.0, 1500 MHz
1800 MHz
112
GeForce 8800 GT SLI
G92
512 MB GDDR3
600 MHz
4.0, 1500 MHz
1800 MHz
112
GeForce 8800 GT
G92
512 MB GDDR3
600 MHz
4.0, 1500 MHz
1800 MHz
112
GeForce 8800  ULTRA 3SLI
G80
768 MB GDDR3
612 MHz
4.0, 1512 MHz
2160 MHz
128
GeForce 8800 ULTRA SLI
G80
768 MB GDDR3
612 MHz
4.0, 1512 MHz
2160 MHz
128
GeForce 8800 ULTRA
G80
768 MB GDDR3
612 MHz
4.0, 1512 MHz
2160 MHz
128
GeForce 8800 GTX
G80
768 MB GDDR3
576 MHz
4.0, 1350 MHz
1800 MHz
128
GeForce 8800 GTS
G80
640 MB GDDR3
500 MHz
4.0, 1188 MHz
1600 MHz
96
GeForce 8800 GTS SLI
G80
320 MB GDDR3
500 MHz
4.0, 1188 MHz
1600 MHz
96
GeForce 8800 GTS
G80
320 MB GDDR3
500 MHz
4.0, 1188 MHz
1600 MHz
96
GeForce 8600 GTS
G84
512 MB GDDR3
675 MHz4.0, 1450 MHz
2016 MHz
32
GeForce 8600 GTS SLI
G84
256 MB GDDR3675 MHz4.0, 1450 MHz
2016 MHz32
GeForce 8600 GTS
G84
256 MB GDDR3675 MHz4.0, 1450 MHz
2016 MHz32
GeForce 8600 GT SLI
G84
256 MB GDDR3540 MHz4.0, 1180 MHz
1400 MHz32
GeForce 8600 GT
G84
256 MB GDDR3540 MHz4.0, 1180 MHz
1400 MHz32
GeForce 8500 GT
G86
256 MB DDR2459 MHz4.0, 918 MHz
800 MHz16
GeForce 8400 GS
G86
256 MB DDR2459 MHz4.0, 918 MHz
800 MHz16
GeForce 7950 GX2
4xG71
4x512 MB GDDR3500 MHz3.01200 MHz4x 24P 8V
GeForce 7950 GX2
2xG71
2x512 MB GDDR3500 MHz3.01200 MHz2x 24P 8V
GeForce 7950 GT
G71
512 MB GDDR3550 MHz3.01400 MHz24P 8V
GeForce 7950 GT
G71512 MB GDDR3550 MHz3.01400 MHz24P 8V
GeForce 7900 GTX
G71512 MB GDDR3650 MHz3.01600 MHz24P 8V
GeForce 7900 GTO
G71512 MB GDDR3650 MHz3.01320 MHz24P 8V
GeForce 7900 GT SLI
G71256 MB GDDR3450 MHz3.01320 MHz24P 8V
GeForce 7900 GT
G71256 MB GDDR3450 MHz3.01320 MHz24P 8V
GeForce 7900 GS SLI
G71256 MB GDDR3450 MHz3.01320 MHz20P 7V
GeForce 7900 GS
G71256 MB GDDR3
450 MHz3.01320 MHz20P 7V
GeForce 7800 GTX
G70512 MB GDDR3550 MHz3.01700 MHz24P 8V
GeForce 7800 GTX SLI
G70256 MB GDDR3
430 MHz3.01200 MHz24P 8V
GeForce 7800 GTX
G70256 MB GDDR3430 MHz3.01200 MHz24P 8V
GeForce 7800 GT SLI
G70256 MB GDDR3400 MHz3.01000 MHz20P 7V
GeForce 7800 GT
G70256 MB GDDR3400 MHz3.01000 MHz20P 7V
GeForce 7600 GT SLI
G73256 MB GDDR3560 MHz3.01400 MHz12P 5V
GeForce 7600 GT
G73256 MB GDDR3560 MHz3.01400 MHz12P 5V
GeForce 7600 GS SLI
G73256 MB DDR2
400 MHz3.0800 MHz12P 5V
GeForce 7600 GS
G73256 MB DDR2
400 MHz3.0800 MHz12P 5V
GeForce 7300 GT
G73256 MB DDR2
350 MHz3.0666 MHz8P 4V
GeForce 7300 GS
G72
128 MB DDR2
550 MHz3.0810 MHz4P 3V
GeForce 6800 ULTRA
NV40
256 MB GDDR3425 MHz3.01100 MHz16P 6V
GeForce 6800 GT
NV40
256 MB GDDR3350 MHz3.01000 MHz16P 6V
GeForce 6600 GT
NV43
128 MB GDDR3500 MHz3.01000 MHz8P 3V
Card Manufacturer and Chip
Memory Bus
Production Process
Transistors
Port
GeForce GTX 280 SLI
512-bit
65 nm
1400 Million
PCIe 2.0
GeForce GTX 280
512-bit
65 nm
1400 MillionPCIe 2.0
GeForce GTX 260 SLI
448-bit
65 nm
1400 MillionPCIe 2.0
GeForce GTX 260
448-bit
65 nm
1400 MillionPCIe 2.0
GeForce 9800 GTS OC
2x 256-bit
65 nm
2x 754 MillionPCIe 2.0
GeForce 9800 GTS SLI
256-bit
65 nm754 MillionPCIe 2.0
GeForce 9800 GTS
256-bit65 nm754 MillionPCIe 2.0
GeForce 9800 GT SLI
256-bit65 nm754 MillionPCIe 2.0
GeForce 9600 GT
256-bit65 nm505 MillionPCIe 2.0
GeForce 9600 GT SLI
256-bit65 nm505 MillionPCIe 2.0
GeForce 9600 GT
256-bit65 nm505 MillionPCIe 2.0
GeForce 8800 GTS OC
256-bit65 nm754 MillionPCIe 2.0
GeForce 8800 GTS SLI
256-bit65 nm754 MillionPCIe 2.0
GeForce 8800 GTS
256-bit65 nm754 MillionPCIe 2.0
GeForce 8800 GT SLI
256-bit65 nm754 MillionPCIe 2.0
GeForce 8800 GT
256-bit65 nm754 MillionPCIe 2.0
GeForce 8800 GT SLI
256-bit65 nm754 MillionPCIe 2.0
GeForce 8800 GT
256-bit65 nm754 MillionPCIe 2.0
GeForce 8800 ULTRA 3SLI
384-bit
90 nm
681 MillionPCIe 1
GeForce 8800 ULTRA SLI
384-bit90 nm681 MillionPCIe 1
GeForce 8800 ULTRA
384-bit90 nm681 MillionPCIe 1
GeForce 8800 GTX
384-bit90 nm681 MillionPCIe 1
GeForce 8800 GTS
320-bit
90 nm681 MillionPCIe 1
GeForce 8800 GTS SLI
320-bit
90 nm681 MillionPCIe 1
GeForce 8800 GTS
320-bit
90 nm681 MillionPCIe 1
GeForce 8600 GTS
128-bit
80 nm
289 MillionPCIe 1
GeForce 8600 GTS SLI
128-bit80 nm289 MillionPCIe 1
GeForce 8600 GTS
128-bit80 nm289 MillionPCIe 1
GeForce 8600 GT SLI
128-bit80 nm289 MillionPCIe 1
GeForce 8600 GT
128-bit80 nm289 MillionPCIe 1
GeForce 8500 GT
128-bit80 nm210 MillionPCIe 1
GeForce 8400 GS
64-bit
80 nm210 MillionPCIe 1
GeForce 7950 GX2 SLI
4x 256-bit
90 nm4x 278 MillionPCIe 1
GeForce 7950 GX2
2x 256-bit
90 nm2x 278 MillionPCIe 1
GeForce 7950 GT SLI
256-bit
90 nm278 MillionPCIe 1
GeForce 7950 GT
256-bit90 nm278 MillionPCIe 1
GeForce 7900 GTX
256-bit90 nm278 MillionPCIe 1
GeForce 7900 GTO
256-bit90 nm278 MillionPCIe 1
GeForce 7900 GT SLI
256-bit90 nm278 MillionPCIe 1
GeForce 7900 GT
256-bit90 nm278 MillionsPCIe 1
GeForce 7900 GS SLI
256-bit90 nm278 MillionsPCIe 1
GeForce 7900 GS
256-bit90 nm278 MillionsPCIe 1
GeForce 7800 GTX
256-bit110 nm303 MillionsPCIe 1
GeForce 7800 GTX SLI
256-bit110 nm303 MillionsPCIe 1
GeForce 7800 GTX
256-bit110 nm
303 MillionsPCIe 1
GeForce 7800 GT SLI
256-bit110 nm303 MillionsPCIe 1
GeForce 7800 GT
256-bit110 nm303 MillionsPCIe 1
GeForce 7600 GT SLI
128-bit
90 nm
178 MillionsPCIe 1
GeForce 7600 GT
128-bit90 nm178 MillionsPCIe 1
GeForce 7600 GS SLI
128-bit90 nm178 MillionsPCIe 1
GeForce 7600 GS
128-bit90 nm178 MillionsPCIe 1
GeForce 7300 GT
128-bit90 nm178 MillionsPCIe 1
GeForce 7300 GS
64-bit
90 nm112 MillionsPCIe 1
GeForce 6800 Ultra
256-bit
130 nm
222 MillionsPCIe 1
GeForce 6800 GT
256-bit
130 nm
222 MillionsPCIe 1
GeForce 6600 GT
128-bit110 nm
146 MillionsPCIe 1


AMD Graphics Cards

Card Manufacturer and Chip
Codename
Memory
GPU Frequency
Shader
Memory Clock Speed
SPs
Radeon HD 4870 X2
R700
2x 1024 MB GDDR5
750 MHz
4.1
3600 MHz
2x 800
Radeon HD 4870 CF
RV770
512 MB GDDR5750 MHz4.13600 MHz800
Radeon HD 4870RV770512 MB GDDR5750 MHz4.13600 MHz800
Radeon HD 4850 CF
RV770512 MB GDDR3625 MHz4.11986 MHz800
Radeon HD 4850RV770512 MB GDDR3625 MHz4.11986 MHz800
Radeon HD 4670RV730
512 MB GDDR3750 MHz4.12000 MHz320
Radeon HD 4550RV710
512 MB GDDR3600 MHz4.11600 MHz80
Radeon HD 3870 X2 CF
2xR680
4x512 MB GDDR3825 MHz4.11802 MHz4x320
Radeon HD 3870 3CF
R680
3x512 MB GDDR3/4825/800 MHz4.11802/2252 MHz3x320
Radeon HD  3870 X2R680
2x512 MB GDDR3825 MHz4.11802 MHz2x320
Radeon HD 3870 CF
RV670
512 MB GDDR4775 MHz4.12252 MHz320
Radeon HD 3870RV670
512 MB GDDR4775 MHz4.12252 MHz320
Radeon HD 3850 CF
RV670
256 MB GDDR3670 MHz4.11658 MHz320
Radeon HD 3850
RV670
256 MB GDDR3670 MHz4.11658 MHz320
Radeon HD 3650 CF
RV635
512 MB GDDR3725 MHz4.11602 MHz120
Radeon HD 3650
RV635
512 MB GDDR3725 MHz4.11602 MHz120
Radeon HD 3470
RV620
256 MB GDDR3796 MHz4.11886 MHz40
Radeon HD 3450
RV620
256 MB GDDR2594 MHz4.1990 MHz40
Radeon HD 2900 XT
R600
512 MB GDDR3743 MHz4.0
1656 MHz320
Radeon HD 2900 XT
R600
512 MB GDDR3743 MHz4.01656 MHz320
Radeon HD 2600 XT
RV630
512 MB GDDR3800 MHz4.01400 MHz120
Radeon HD 2600 XT
RV630
512 MB GDDR3800 MHz4.01400 MHz120
Radeon HD 2600 XT
RV630
256 MB GDDR4800 MHz4.02200 MHz120
Radeon HD 2600 PRO CF
RV630
256 MB GDDR3600 MHz4.01400 MHz120
Radeon HD 2600 PRO
RV630
256 MB GDDR3600 MHz4.01400 MHz120
Radeon HD 2400 XT
RV610
256 MB GDDR3700 MHz4.01400 MHz40
Radeon HD 2400 PRO
RV610
256 MB DDR2525 MHz4.0800 MHz40
Radeon X1950 XTX CF
R580+
512 MB GDDR4650 MHz3.0
2000 MHz48P 8V
Radeon X1950 XTX
R580+
512 MB GDDR4650 MHz3.02000 MHz48P 8V
Radeon X1950 XT
R580+
256 MB GDDR3625 MHz3.01800 MHz48P 8V
Radeon X1950 PRO
R570
256 MB GDDR3575 MHz3.01380 MHz36P 8V
Radeon X1950 GT
R570
256 MB GDDR3500 MHz3.01200 MHz36P 8V
Radeon X1900 XT CF
R580
512 MB GDDR33625 MHz3.01450 MHz48P 8V
Radeon X1900 XT
R580
512 MB GDDR3625 MHz3.01450 MHz48P 8V
Radeon X1900 XT
R580
512 MB GDDR3625 MHz
3.0
1450 MHz
48P 8V
Radeon X1900 GT
R580
256 MB GDDR3575 MHz
3.0
1188 MHz
36P 8V
Radeon X1800 XT
R520
256 MB GDDR3631 MHz
3.0
1504 MHz
16P 8V
Radeon X1800 XT
R520
512 MB GDDR3621 MHz
3.0
1494 MHz
16P 8V
Radeon X1800 XL
R520
256 MB GDDR3500 MHz
3.0
990 MHz
16P 8V
Radeon X1800 GTO
R520
256 MB GDDR3500 MHz
3.0
990 MHz
16P 8V
Radeon X1650 XT
R560
256 MB GDDR3575 MHz
3.0
1350 MHz
24P 8V
Radeon X1650 Pro
R530
256 MB GDDR3594 MHz
3.0
1378 MHz
12P 5V
Radeon X1600 XT CF
R530
256 MB GDDR3581 MHz
3.0
1368 MHz
12P 5V
Radeon X1600 XT
R530
256 MB GDDR3581 MHz
3.0
1368 MHz
12P 5V
Radeon X1600 Pro CF
R530
256 MB GDDR3500 MHz
3.0
784 MHz
12P 5V
Radeon X1600 Pro
R530
256 MB GDDR3500 MHz
3.0
784 MHz
12P 5V
Radeon X1300 XT
R530
256 MB GDDR3587 MHz
3.0
1378 MHz
12P 5V
Radeon X1300 Pro
R515
128 MB GDDR3594 MHz
3.0
990 MHz
4P 2V
Radeon X1300
R5515
256 MB GDDR3446 MHz
3.0
496 MHz
4P 2V
Radeon X800 XT
R423
256 MB GDDR3506 MHz
2.0
1000 MHz
16P 6V
Card Manufacturer and Chip
Memory Bus
Production Process
Transistors
Port
Radeon HD 4870 X2
2x256-bit
55 nm
2x956 Million
PCIe 2.0
Radeon HD 4870 CF
256-bit55 nm956 Million
PCIe 2.0
Radeon HD 4870
256-bit55 nm956 MillionPCIe 2.0
Radeon HD 4850 CF
256-bit55 nm956 MillionPCIe 2.0
Radeon HD 4850
256-bit55 nm956 MillionPCIe 2.0
Radeon HD 4670
128-bit
55 nm514 MillionPCIe 2.0
Radeon HD 4550
64-bit
55 nm242 MillionPCIe 2.0
Radeon HD 3870 X2 4CF
4x256-bit55 nm4x666 MillionPCIe 2.0
Radeon HD 3870 3CF
3x256-bit55 nm3x666 MillionPCIe 2.0
Radeon HD 3870 X2
2x256-bit55 nm2x666 MillionPCIe 2.0
Radeon HD 3870 CF
256-bit55 nm666 MillionPCIe 2.0
Radeon HD 3870
256-bit55 nm666 MillionPCIe 2.0
Radeon HD 3850 CF
256-bit55 nm666 MillionPCIe 2.0
Radeon HD 3850
256-bit55 nm666 MillionPCIe 2.0
Radeon HD 3650 CF
128-bit
55 nm378 MillionPCIe 2.0
Radeon HD 3650
128-bit
55 nm378 MillionPCIe 2.0
Radeon HD 3470
64-bit
55 nm181 MillionPCIe 2.0
Radeon HD 3450 XT
64-bit
55 nm181 MillionPCIe 2.0
Radeon HD 2900 XT CF
512-bit
80 nm
720 MillionPCIe 1.0
Radeon HD 2900 XT
512-bit
80 nm
720 MillionPCIe 1.0
Radeon HD 2600 XT CF
128-bit
65 nm
390 MillionPCIe 1.0
Radeon HD 2600 XT
128-bit
65 nm390 MillionPCIe 1.0
Radeon HD 2600 XT
128-bit
65 nm390 MillionPCIe 1.0
Radeon HD 2600 Pro CF
128-bit
65 nm390 MillionPCIe 1.0
Radeon HD 2600 Pro
128-bit
65 nm390 MillionPCIe 1.0
Radeon HD 2400 XT
64-bit
65 nm180 MillionPCIe 1.0
Radeon HD 2400 Pro
256-bit65 nm180 MillionPCIe 1.0
Radeon X1950 XTX CF
256-bit90 nm
384 MillionPCIe 1.0
Radeon X1950 XTX
256-bit90 nm
384 MillionPCIe 1.0
Radeon X1950 XT
256-bit90 nm
384 MillionPCIe 1.0
Radeon X1950 Pro
256-bit80 nm
330 MillionPCIe 1.0
Radeon X1950 GT
256-bit80 nm
330 MillionPCIe 1.0
Radeon X1900 XT CF
256-bit90 nm
384 MillionPCIe 1.0
Radeon X1900 XT
256-bit90 nm
384 MillionPCIe 1.0
Radeon X1900 XT
256-bit90 nm
384 MillionPCIe 1.0
Radeon X1900 GT
256-bit90 nm
384 MillionPCIe 1.0
Radeon X1800 XT
256-bit90 nm
321 MillionPCIe 1.0
Radeon X1800 XT
256-bit90 nm
321 MillionPCIe 1.0
Radeon X1800 XL
256-bit90 nm
321 MillionPCIe 1.0
Radeon X1800 GTO
256-bit90 nm
321 MillionPCIe 1.0
Radeon X1650 XT
128-bit
80 nm
330 MillionPCIe 1.0
Radeon X1650 Pro
128-bit
90 nm
157 MillionPCIe 1.0
Radeon X1600 XT CF
128-bit
90 nm
157 MillionPCIe 1.0
Radeon X1600 XT
128-bit
90 nm
157 MillionPCIe 1.0
Radeon X1600 Pro CF
128-bit
90 nm
157 MillionPCIe 1.0
Radeon X1600 Pro
128-bit
90 nm
157 MillionPCIe 1.0
Radeon X1300 XT
128-bit
90 nm
157 MillionPCIe 1.0
Radeon X1300 Pro
64-bit
90 nm
105 MillionPCIe 1.0
Radeon X1300
128-bit
90 nm
105 MillionPCIe 1.0
Radeon X800 XT
256-bit130 nm
120 MillionPCIe 1.0

Memory clock speed=DDR-Clock rate doubled, physical frequency is cut in half

DDR5-clock rate quadrupled, physical frequency is one fourth

SPs=Stream-Processors; P and V=Pixel shader and Vertex shader

TC=Turbo Cache HM=Hyper Memory

OC=overclocked (clock frequency higher than standard) <br>

SLI=Parallel operation with 2 Nvidia cards

3SLI=Parallel operation with 3 Nvidia graphics chips

4SLI=Parallel operation with 4 Nvidia graphic chips

CF=CrossFire parallel operation with 2 ATI cards

3CF=CrossFire parallel operation with 3 ATI graphic chips

4CF=CrossFire parallel operation with 4 ATI graphic chips

R680=2xRV670

R700=2xRV770

Shader 2.0=DirectX 9.0; 3.0=DirectX 9.0c; 4.0=DirectX 10; Shader 4.1=DirectX 10.1

This is the standard configuration of the graphics card test system, and is the basis by which the power consumption of a complete system was determined.

Nvidia Single-Chip Graphics Cards, AMD Single-Chip And CrossFire Graphics Cards

CPU
Intel Core 2 Extreme X6800 @ 2.93 GHz (11x266 MHz), Socket 775, 1.28 V, 65 nm, 4096 KB L2 cache
FSB
1066 MHz (4x266 MHz)
Motherboard
Asus P5E3 Deluxe, PCIe 2.0 2x16, ICH9R
Chip Set
Intel X38
Memory
2x1 GB, Ballistix (Crucial Technology) 1.5 V, DDR3 1066 7-7-7-20 (2x533 MHz)
Audio
Intel High Definition Audio
LAN
Intel 1000 Pro
Hard Drive

Western Digital WD5000AAKS 500 GB, SATA, 16 MB cache

Hitachi 120 GB, SATA, 8 MB cache

DVD
Gigabyte GO-D1600C
Power Supply
CoolerMaster RS-850-EMBA 850 W


Nvidia SLI Graphics Cards

Motherboard
Asus P5N-T Deluxe, PCIe 2.0 2x16
Chip Set
Nvidia nforce 780i SLI
Memory
2x1 GB, A-Data Technology 1.8 V, DDR2 800 5-5-5-18 (2x400 MHz)
Audio
ADI 1988B SoundMax
LAN
Marvell 88E1116 Gigabit


Driver And Configuration 

Graphic
AMD Catalyst, Nvidia ForceWare, and GeForce
Operating System
Windows Vista Enterprise SP1
DirectX
10 and 10.1
Chip Set Driver
X38 Intel 8.3.1.1009, 780i Nvidia nforce 9.64


The power consumption is given in watts; 1,000 watts (1 kW) is used as a baseline for the electricity used. The cost of a kilowatt hour differs depending on the region and electricity supplier. We used 20 cents (the price at the Munich utility company Stadtwerke München) for the electricity calculation. PSU stands for the power supply unit.

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Top Comments
  • 10 Hide
    nukemaster , January 21, 2009 10:59 AM
    This article was due. No more you need an 800 watt psu for the 4870 , core2 quad ad 1 hard drive anymore :p 

    Guest11since Core i7 920 has TDP = 130W, how can it consume 85W only?

    The TDP is more of a design thing. Almost all of Intels initial Core2 line had a TDP of 65 watts yet many took much less power. Intel gives a worst case of that type number and does not measure every cpu.

    AMD does the same thing. They listed almost all the initial Athlon 64's at 89 watts yet many did not take that or give off that amount.

    zxv9511.21 Jigawatts !!!

    You act like you would need a small fusion reactor or maybe a bolt of lightning to get that?
Other Comments
  • 7 Hide
    Inktfish , January 21, 2009 8:52 AM
    Could you please add the Radeon 4830? :) 
  • 3 Hide
    sepuko , January 21, 2009 9:13 AM
    Took the words right out of my mouth.
  • -5 Hide
    Anonymous , January 21, 2009 10:06 AM
    since Core i7 920 has TDP = 130W, how can it consume 85W only?
  • -3 Hide
    Anonymous , January 21, 2009 10:46 AM
    1.21 Jigawatts !!!
  • 10 Hide
    nukemaster , January 21, 2009 10:59 AM
    This article was due. No more you need an 800 watt psu for the 4870 , core2 quad ad 1 hard drive anymore :p 

    Guest11since Core i7 920 has TDP = 130W, how can it consume 85W only?

    The TDP is more of a design thing. Almost all of Intels initial Core2 line had a TDP of 65 watts yet many took much less power. Intel gives a worst case of that type number and does not measure every cpu.

    AMD does the same thing. They listed almost all the initial Athlon 64's at 89 watts yet many did not take that or give off that amount.

    zxv9511.21 Jigawatts !!!

    You act like you would need a small fusion reactor or maybe a bolt of lightning to get that?
  • -1 Hide
    neiroatopelcc , January 21, 2009 11:39 AM
    So my system actually has a too big power supply to be effective?
    I'm running a 3,4ghz c2d with 5x500gb sata drives, a dvdrw and a 4870 on a p35 board.
    According to the article that's not going to draw the ~400W needed to get within effective range of my corsair 620 ....
  • 2 Hide
    cynewulf , January 21, 2009 11:46 AM
    There's a mistake in the power under load for the 3870X2. It shows the same as the idle consumption. If only that were true! :D 
  • 3 Hide
    Inneandar , January 21, 2009 11:48 AM
    The TDP (thermal design power) is meant to be a guideline for the cooling solution, not the power consumption. To qualify for a cpu with a TDP of 120W, a cooler must be able to dissipate 120W. Practically, of course, this means it is an upper bound to (sensible) power consumption.

    also small note: Is it just me or is it strange to see the 260 SLI consume more than the 280 SLI. maybe in need of a beefier test scene...
  • 2 Hide
    zodiacfml , January 21, 2009 11:53 AM
    nice collection of data. i hope many learn from this and avoid recommending too powerful supplies.
  • 0 Hide
    roofus , January 21, 2009 12:12 PM
    better off with too much power supply than not enough. at least if you over-spec the power supply you leave some breathing room for any additional components.
  • 0 Hide
    kschoche , January 21, 2009 12:34 PM
    neiroatopelccSo my system actually has a too big power supply to be effective? I'm running a 3,4ghz c2d with 5x500gb sata drives, a dvdrw and a 4870 on a p35 board. According to the article that's not going to draw the ~400W needed to get within effective range of my corsair 620 ....


    Absolutely Correct!
    If you add all of those components together, and get 400W, and your PSU is only 75% efficient at that level, you're actually consuming ~500W and your PSU is eating that extra 100W. Though if you have a modern PSU, its usually not that bad, but goes to show that idiots who buy 1200W PSU's because it has a big number really are just that, idiots.
  • -1 Hide
    zodiacfml , January 21, 2009 12:51 PM
    yes if you're planning to add a video card but adding a couple of hard drives, dvd drive, or upgrading the processor won't require more than 100W allowance.

    roofusbetter off with too much power supply than not enough. at least if you over-spec the power supply you leave some breathing room for any additional components.

  • 0 Hide
    one-shot , January 21, 2009 2:01 PM
    kschocheAbsolutely Correct!If you add all of those components together, and get 400W, and your PSU is only 75% efficient at that level, you're actually consuming ~500W and your PSU is eating that extra 100W. Though if you have a modern PSU, its usually not that bad, but goes to show that idiots who buy 1200W PSU's because it has a big number really are just that, idiots.


    Let's take a step back. If his PSU is 400W and it is 75% efficient, then it draws 533.3W at maximum power draw. You are somewhat close, but you generalized. Different PSU's are more efficient at different load percentages, but 75% sounds alright for an older PSU. His Computer draws 400W and his PSU draws 533W from the receptacle on the wall.
  • 3 Hide
    billiardicus , January 21, 2009 2:09 PM
    Toms,

    Great article. This is exactly why I visit your page everyday. How about adding the GTX 295 and 285 in single and SLI configurations to the list? Hey, somebody has to ask right? :) 
  • -4 Hide
    hyteck9 , January 21, 2009 2:29 PM
    Where is the Nvidia 295?
    I think the 295 with an i7 OC'd to 4Ghz is going to be a pretty standard choice in the coming months... add a hard drive and a DVD-burner and your looking at 600WATTs at full load... so 800WATT PSU would be the right choice, yes?
  • 3 Hide
    Niva , January 21, 2009 2:33 PM
    Well I learned something, I always thought that PSU ratings are based on what they can suck out, not what they put out to the computer components which they power... now that I'm looking at this article I feel pretty stupid for thinking this all these years.
  • 4 Hide
    Pei-chen , January 21, 2009 2:49 PM
    One of the best articles ever. I hate proving myself when I tell people that using an inefficient video card will increase their electric bill by $50 vs. an efficient card. An idiot actually told me that the difference between a GTX 260 and 4870 running 24/7 at idle for a year is less than $10.

    My system:
    ASUS P5B Deluxe WiFi-AP
    E6400 @ 2.56Ghz @ 1.135v with Speedstop enabled
    8GB OCZ PC2-6400 RAM @ 1.8v
    Arctic Cooling Freezer 7 Pro with PWM enabled
    Antec NeoPower 550 PSU
    2x Seagate 7200.11 1.5TB drive
    1x Toshiba SATA DVD+/-RW drive
    GIGABYTE GV-R485OC-1GH Radeon 4850 @350 core/500 ram

    The idle power consumption at plug is 1.06A. Gaming load is about 1.71A with the Radeon overclocked to 730 core and 1130 ram. The 4850 consumption should be lower than typical 4850s because it uses GIGABYTE's custom PCB. Clearly my PSU is overkill as I only load it between 20~40% but it is not that easy to find good quality small PSU two years ago. Good thing it’s efficient.
  • 3 Hide
    Anonymous , January 21, 2009 3:12 PM
    This is an exellent article!

    There has been way too much bull about needing a 500 watter or more for a regular board, cpu and single graphics card. Its also great to have figures to compute total cost of ownership per GPU. The PC i game on is more on then off, so this info is significant. Thank you.
  • 3 Hide
    Anonymous , January 21, 2009 3:16 PM
    Interesting article.. it should be noted that those of us with Geforce 2** cards and two monitors active will always be drawing the full 3D load of powe.

    There is a bug in the latest two WHQL drivers which causes throttling to not occur even if there are no 3D applications active.
  • 7 Hide
    hyteck9 , January 21, 2009 3:30 PM
    Dont forget to spend $500 on a UPS that can handle your 800-1000 watt power supply!
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