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Graphics Chips And Test Configuration

Best Of The Best: High-End Graphics Card Roundup
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We used an Intel Core i7-920 CPU for our testing purposes, boosting its clock speed to 3.8 GHz in order to circumvent any potential CPU bottlenecks.

This time, our technical tables are more comprehensive to help us detail how our retail test cards differ from the clock rates for standard reference cards. You'll find three different generations of manufacturing technology represented here as well: 65, 55, and 40 nm all exert influence on maximum power consumption and operating temperatures for graphics chips. These tables also illustrate how overclocking on specialty models boosts fill rates and raw computing power for their graphics chips.

Nvidia Graphics Cards
Manufacturer and Chipset
Code NameGraphics RAM
GPU clock
ShaderRAM clock
SPs
EVGA GTX 295 Hydro Copper (GeForce GTX 295)2 x GT200b2 x 896 GDDR3720 MHz4.0, 1,548 MHz2 x 1,080 MHz2 x 240
GeForce GTX 2952 x GT200b2 x 896 GDDR3576 MHz4.0, 1,242 MHz2 x 999 MHz2 x 240
Zotac GTX285 AMP Edition (GeForce GTX 285)GT200b1,024 GDDR3702 MHz4.0, 1,512 MHz2 x 1,296 MHz240
MSI N285GTX SuperPipe OC (GeForce GTX 285)GT200b1,024 GDDR3680 MHz4.0, 1,476 MHz2 x 1,250 MHz240
GeForce GTX 285GT200b1,024 GDDR3648 MHz4.0, 1,476 MHz2 x 1,242 MHz240
MSI N280GTX OC HydroGen (GeForce GTX 280)GT2001,024 GDDR3700 MHz4.0, 1,400 MHz2 x 1,150 MHz240
GeForce GTX 280GT2001,024 GDDR3602 MHz4.0, 1,296 MHz2 x 1,107 MHz240
BFG GTX 275 (GeForce GTX 275)GT200b896 GDDR3648 MHz4.0, 1,440 MHz2 x 1,152 MHz240
GeForce GTX 275GT200b896 GDDR3633 MHz4.0, 1,404 MHz2 x 1,134 MHz240
GeForce GTX 260 216SPsGT200b896 GDDR3576 MHz4.0, 1,242 MHz2 x 999 MHz216
GeForce GTX 260GT200896 GDDR3576 MHz4.0, 1,242 MHz2 x 999 MHz192
GeForce 9800 GTX+G92b512 MB GDDR3738 MHz4.0, 1,836 MHz2 x 1,100 MHz128
GeForce 9800 GTXG92512 MB GDDR3675 MHz4.0, 1,688 MHz2 x 1,100 MHz128
Manufacturer and Chipset
Memory bus
Fab technology
TransistorsInterface
EVGA GTX 295 Hydro Copper (GeForce GTX 295)2 x 448-bit55 nm2 x 1,400 millionPCIe 2.0
GeForce GTX 2952 x 448-bit55 nm2 x 1,400 millionPCIe 2.0
Zotac GTX285 AMP Edition (GeForce GTX 285)512-bit55 nm1,400 millionPCIe 2.0
MSI N285GTX SuperPipe OC (GeForce GTX 285)512-bit55 nm1,400 millionPCIe 2.0
GeForce GTX 285512-bit55 nm1,400 millionPCIe 2.0
MSI N280GTX OC HydroGen (GeForce GTX 280)512-bit65 nm1,400 millionPCIe 2.0
GeForce GTX 280512-bit65 nm1,400 millionPCIe 2.0
BFG GTX 275 (GeForce GTX 275)448-bit55 nm1,400 millionPCIe 2.0
GeForce GTX 275448-bit55 nm1,400 millionPCIe 2.0
GeForce GTX 260 216SPs448-bit55 nm1,400 millionPCIe 2.0
GeForce GTX 260448-bit65 nm1,400 millionPCIe 2.0
GeForce 9800 GTX+256-bit55 nm754 millionPCIe 2.0
GeForce 9800 GTX256-bit65 nm754 millionPCIe 2.0
Manufacturer and Chipset
Pixel Fill Rate Gpixel/sTexture Fill Rate Gtexel/sMemory Bandwidth GB/sDie Size mm²
EVGA GTX 295 Hydro Copper (GeForce GTX 295)2 x 20.22 x 46.12 x 121.02 x 470
GeForce GTX 2952 x 16.12 x 36.92 x 111.92 x 470
Zotac GTX285 AMP Edition (GeForce GTX 285)22.551.4165.9470
MSI N285GTX SuperPipe OC (GeForce GTX 285)21.849.8160.0470
GeForce GTX 28520.747.4159.0470
MSI N280GTX OC HydroGen (GeForce GTX 280)22.4
51.2147.2576
GeForce GTX 28019.3
44.1141.7576
BFG GTX 275 (GeForce GTX 275)18.1
41.5129.0470
GeForce GTX 27517.7
40.5127.0470
GeForce GTX 260 216SPs16.136.9111.9470
GeForce GTX 26016.1
36.9111.9576
GeForce 9800 GTX+11.8
47.270.4276
GeForce 9800 GTX10.8
43.270.4330
ATI Graphics Cards
Manufacturer and Chipset
CodenameGraphics RAM
GPU Clock
ShaderMemory clock
SPs
Radeon HD 4890R7901,024 MB GDDR5850 MHz4.14 x 975 MHz800
Radeon HD 4870 X2R700 (2 x RV770)2 x 1,024 MB GDDR5750 MHz4.14 x 900 MHz2 x 800
Radeon HD 4870RV770512 MB GDDR5750 MHz4.14 x 900 MHz800
Radeon HD 4850RV770512 MB GDDR3625 MHz4.12 x 993 MHz800
Radeon HD 4770RV740512 MB GDDR5750 MHz4.14 x 800 MHz640
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