My question is this, I recently built a new system and I would like to know if my CPU will bottleneck my GPUs or not since I've read about various things about intel socket 1156 isnt fully equipped to handle quadfirex 5970.
This is my build.
Case: Ikonik ra x10 - LCS case (with dual quad 80mm rads)
CPU: 1156 i7 875k unlocked multiplier cpu
Mobo: Asus Maximus 3 Extreme with koolance full chipset liquid cooling
Ram: 4x2gb Corsair Dominator-gt pc1600 cl7
Video (1): 2 Xfx 5970 in quadfirex (2x2gpu) with koolance waterblock
Video (2): eVGA 9800gt 512mb video for dedicated phsyx
PSU: Sparkle 1250w 80plus gold certified psu
Rad (1): 2 single 120mm Black Ice gtx rad with 93cfm 120mm fan
Rad (2): single 140mm Black Ice gtx rad with high cfm 140mm fan
Rad (3): 2 rows of quad 80mm radiator stocked by Ikonik case
Pump (1): Ikonik stock pump
Pump (2): Swiftech 355 pump
HD (1): 2 Intel 80gb SSD x25-m in raid0 (os boot)
HD (2): 1 TB WD Black 64mb 6gbps in SATA3 for storage
OD (1): LG DVDRW
OD (2): LG Blu-ray Writer
Mon: 3 Acer 23'in 1080, 5ms, 1:50k (eyefinity)
System is running 2 LCS loops.
1: 2 rows of quad 80mm radiator on chipset/mosfet and cpu.
2. 2 single 120mm rad and a single 140mm rad on dual ati 5970 video
I'm able to OC cpu to ~4.2ghz stable - havent tried pushing it further yet but fully intend to since I recently changed PSU to 1250w (was using Corsair 950w), added the 140mm single rad, added second 5970 card, and added the 9800gt card as dedicated phsyx.
The temps are around ~30'c idle and ~40-42'c full load with cpu
Videocards is ~30'c idle and ~40 full load.
My questions are:
1. Will my cpu bottleneck my dual 5970 if I ran my cpu in stock speed? 2.93ghz quad core.
2. Will overclocking my cpu help the bottle necking issue? If so to what speed?
3. Will the 1250w PSU handle my rig effectively and stable?
4. Will the board Asus Maximus III Extreme able to handle dual 5970 both in 16x and my 9800gt in 8x (this board does not have a nf200 chipset)?
The board specs says it can handle dual video cards at 16/16, 3 at 8/16/8, 4 at 8/8/8/8 and 5 at 8/8/8/8/8. I notice the lanes runs by pair, lets say slot 1 and 2 is connected, slot 3 and 4 is connected (example if only slot 1 is occupied and slot 2 is not, then it runs on 16x with slot 1, but if slot 1 and 2 is both occupied then both shares the 16x speed so both slot 1 and 2 will both run on 8/8 instead). But the question is theres 5 lanes, 1 shares with 2, 3 shares with 4, and the 5th slot is alone? So am I safe to assume that if I run the video cards on slot 1 and 3, both will run 16x each (as specified by the manufacture?), while I can plug the 9800gt dedicated phsyxs on slot 5 as a stand alone 8x not sharing any bandwidth with any other slots? I wanted to make sure that I'm not throwing in a dedicated phsyxs to gimp my 5970's speed, which leads me to my 5th question...
5. If lets say I run 1 5970 on 16x, 1 5970 and a 9800gt dedicated physx both on 8/8, is the speed noticable than compared to dual 5970 both at 16x lane per without phsyx?
This is my build.
Case: Ikonik ra x10 - LCS case (with dual quad 80mm rads)
CPU: 1156 i7 875k unlocked multiplier cpu
Mobo: Asus Maximus 3 Extreme with koolance full chipset liquid cooling
Ram: 4x2gb Corsair Dominator-gt pc1600 cl7
Video (1): 2 Xfx 5970 in quadfirex (2x2gpu) with koolance waterblock
Video (2): eVGA 9800gt 512mb video for dedicated phsyx
PSU: Sparkle 1250w 80plus gold certified psu
Rad (1): 2 single 120mm Black Ice gtx rad with 93cfm 120mm fan
Rad (2): single 140mm Black Ice gtx rad with high cfm 140mm fan
Rad (3): 2 rows of quad 80mm radiator stocked by Ikonik case
Pump (1): Ikonik stock pump
Pump (2): Swiftech 355 pump
HD (1): 2 Intel 80gb SSD x25-m in raid0 (os boot)
HD (2): 1 TB WD Black 64mb 6gbps in SATA3 for storage
OD (1): LG DVDRW
OD (2): LG Blu-ray Writer
Mon: 3 Acer 23'in 1080, 5ms, 1:50k (eyefinity)
System is running 2 LCS loops.
1: 2 rows of quad 80mm radiator on chipset/mosfet and cpu.
2. 2 single 120mm rad and a single 140mm rad on dual ati 5970 video
I'm able to OC cpu to ~4.2ghz stable - havent tried pushing it further yet but fully intend to since I recently changed PSU to 1250w (was using Corsair 950w), added the 140mm single rad, added second 5970 card, and added the 9800gt card as dedicated phsyx.
The temps are around ~30'c idle and ~40-42'c full load with cpu
Videocards is ~30'c idle and ~40 full load.
My questions are:
1. Will my cpu bottleneck my dual 5970 if I ran my cpu in stock speed? 2.93ghz quad core.
2. Will overclocking my cpu help the bottle necking issue? If so to what speed?
3. Will the 1250w PSU handle my rig effectively and stable?
4. Will the board Asus Maximus III Extreme able to handle dual 5970 both in 16x and my 9800gt in 8x (this board does not have a nf200 chipset)?
The board specs says it can handle dual video cards at 16/16, 3 at 8/16/8, 4 at 8/8/8/8 and 5 at 8/8/8/8/8. I notice the lanes runs by pair, lets say slot 1 and 2 is connected, slot 3 and 4 is connected (example if only slot 1 is occupied and slot 2 is not, then it runs on 16x with slot 1, but if slot 1 and 2 is both occupied then both shares the 16x speed so both slot 1 and 2 will both run on 8/8 instead). But the question is theres 5 lanes, 1 shares with 2, 3 shares with 4, and the 5th slot is alone? So am I safe to assume that if I run the video cards on slot 1 and 3, both will run 16x each (as specified by the manufacture?), while I can plug the 9800gt dedicated phsyxs on slot 5 as a stand alone 8x not sharing any bandwidth with any other slots? I wanted to make sure that I'm not throwing in a dedicated phsyxs to gimp my 5970's speed, which leads me to my 5th question...
5. If lets say I run 1 5970 on 16x, 1 5970 and a 9800gt dedicated physx both on 8/8, is the speed noticable than compared to dual 5970 both at 16x lane per without phsyx?