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Strange overheating problem after removing second Sapphire Radeon HD 7930 3GB

post #1 of 4
Thread Starter 
Ok, I've been building high end PC's for some time so I'm usually offering the tech. But this new overheating problem is not only strange up because it involves Two PC's and some very expensive hardware many minds would be better than one.
I just completed my second demo PC for Sim Racing (AMD) two week ago. Now my primary Racing PC (Intel, yr old) is running hotter and hotter each day when Racing Project CARS. I've lowered setting, turned up fans but it continues getting hotter each day. Up until two weeks ago I could Run all day at 47C with Ultra setting in Project CARS.
Intel System Info: CPU overclocked of 4.7, (i7 4820K 2011 - H100 Cooler) ASUS Sabertooth X79, 4 sticks of OCZ FLEX II Htreme Liquid DDR3 1600Mhz (not using water), 1 x 250GB SSD OS Win 7 Ultimate 64bit, 3 x 1.5TB Drives Storage. ASUS DVD/RW, Corsair HX1000W PCU, Sapphire Radeon HD 7970 3GB (BIOS Boost switch set to high - GPU clock 1000 MHz - Memory clock 1450 MHz) 46" LG LED TV, ASUS Xonar Essence STX sound card and Bose SoundDock. All this is sitting in a White Rosewill THOR V2 Case on my desk. (office is 14' x 10' with air set 52*) I like it cold. Avg Temp 28C to 30C and when playing Project CARS for hrs it never went above 47C.
I bought a matching GPU last Sept for the AMD Sim Racing Demo I was planning. Project CARS looks amazing with one 7970, how about two? Well these things are three slots big to out went the sound card and in went the matching 7970.
Here is the revised setup info: 2 x Sapphire Radeon HD 7970 3GB (both cards had the BIO Boost switches set to high GPU clock 1000 MHz - Memory clock 1450 MHz) running Crossfire and Eyefinity 5760 x 1080 across 3 x ASUS 24" Monitors. The Cards set so close together the top card could only pull hot air (first card was lowered and the new card was placed in the tip PCIE x16 slot. The Avg Temp remained 28C to 30C, Project CARS only climbed to 53C after about 30mins.
Two weeks ago removed the top GPU, put the bottom one back in the first slot. I kept the setting the same using the 3 monitors. For now I've left the sound card out. It took two days to assemble the AMD Rig due to a MOD I did to the Antec KHLER H20 1250 CPU Cooler. (the MOD Proved to NET 8*F colder than the best Corsair System) P.S. The AMD Rig is running a ASUS M5A99FX Pro R2.0 board, FX4170 4.2 GHz CPU overclock to 4.7 GHz. 4 x 2GB Corsair DDR3 1600MHz RAM, Same Drive setup, Corsair Pro AX1200W PCU, Cooler Master HAF X Case. 46" LG LCD TV, I have two matching and plan to run the Sim Rigs side by side.
But now I've got heat building in THOR. I race a lot and started to notice the razed temp around day three 58C. That's when I started turning things down. Lowered the game settings removed the side door and finely stared cutting total race labs. That was 9 days ago, yesterday after a hard F1 Race in a Thunder Storm the temp was 86C. Guess Virtual Rain doesn't do ****. LOL, Today after running hard the Temp hit 98C, so no more racing till I've worked this out. Funny thing is the GPU shows no sign of running problems. Everything looks killer, the only thing that tells me she's heating up is a drop in frame rates. It should be noted that most of the heat is coming from the GPU. The has been an increase temp around the CPU and the top of the board, but it seems to be a side effect.
Ok, Super Tech Brains, any thoughts. i.e., trouble shooting
Thanks, XtreamStealth
post #2 of 4
The only explanation for a sudden rise in GPU temps when the system in the same configuration in the same game ran fine prior is either a fan problem or a heatsink problem.

Please make sure that as the temp rises that you actually see the fan speed on the GPU increasing, With the new AMD Crimson driver, there was a known fan issue where the fan speed was locked at a low rpm. This could be your problem.

If you can physically see the fan speed increasing and they are working fine, the next course of action is to examine the heatsink. Radeon 7970's aren't exactly new and haven't been made for a few years. It may be time to remove the heatsinks and replace the thermal compound and give them a good cleaning.

Welcome to the forum and please try to be more concise with your issues. The wall of text is a bit much.
Edited by Depauville Kid - 1/11/16 at 9:04am
post #3 of 4
Thread Starter 
I fixed the problem by reapplying the thermal paste and replacing the thermal pads. Six months later and the overheating problem has returned. I've tried just about everything. My last attempt was a week ago. I bought a NZXT Kraken G10 GPU Bracket and a Corsair H90. The Sapphire Radeon HD 7970 GPU required a .05mm cooper shim. This turned out to be too thin, a .08mm shim was installed. After I installed the GPU with the RAD @ rear and drawing fresh air in, the system seemed fixed. GPU was a cool 30C at idle. The CPU was at 42C. I cleaned the H100 and the made no difference. The system continues to overheat when playing Project CARS using Eyefinity on three 23" ASUS Screens. I dropped the resolution down to 1920 x 1080 and that helps a little but it still overheats, just takes longer. Now a week later the ambient temp has jumped 20F degrees . My temps at idle are 39C GPU and 48C CPU. I'm at a loss.
I have another system in another room and it does not overheat. It's an AMD setup but almost the exact same setup, ASUS MA99FX Pro R2.0, FX 4170, Sapphire 7970 3gb, 8GB Ram. Coolermaster HAF X case. Both systems are overclocked to 4.7MHz
post #4 of 4
Do you have the fans on the radiator from the G-10 set to exhaust? Make sure the header the pump is plugged into is getting full power. Which AIO are you using on the G-10?
   
Work Rig
(22 items)
 
CPUMotherboardGraphicsGraphics
Intel Core i7-6850K 4.5 GHz  ASUS TUF SABERTOOTH X99 LGA2011-V3  Asus STRIX GTX 980 ~1600 Core Asus STRIX GTX 980 ~1600 Core 
RAMHard DriveHard DriveHard Drive
32GB 3000MHz HyperX Savage DDR4  Samsung 850 Pro 512GB SSD  Samsung 256GB SM951 M.2 SSD PCIe 3.0 x 4 (PE246... WD 3TB Black SATA 6Gbs 
Hard DriveHard DriveHard DriveOptical Drive
WD 4TB Red in RAID 1 WD 4TB Red in RAID 1 ICY DOCK DuoSwap MB971SP-B Fits 5.25" Bay allo... LG WH14NS40 14x SATA Blu-ray Internal Rewriter 
CoolingCoolingCoolingCooling
CPU - Corsair Hydro H110  GPU x 2 - Nzxt G-10 x 2 + Corsair H-90 x 2  Lamptron FC-5 V2 Fan Controller 4 Aerocool Dead Silence 140mm Fans on the radia... 
OSOSMonitorMonitor
Windows 7 Ultimate 64 bit LINUX KXStudio AOC i2769Vm 27-Inch Screen IPS Monitor AOC i2769Vm 27-Inch Screen IPS Monitor 
MonitorMonitorMonitorMonitor
AOC i2769Vm 27-Inch Screen IPS Monitor BENQ GW2250 +1 Monitor Easymountlcd Triple Monitor Stand (002-0019) Homemade Extension and vesa mount for +1 Monitor 
KeyboardPowerCaseMouse
Top - CM Storm QuickFire TK (Red) Bottom - CM ... EVGA SuperNOVA 850 G2 - 80 Plus Gold Corsair Carbide Series 400R Cooler Master Storm Inferno 
Mouse PadAudioAudioAudio
Top of the Desk TUF Onboard Audio Cyber Acoustics Platinum CA-3550 Logitech H390 Headset 
OtherOtherOtherOther
ASUS Wi-Fi PCI Express Adapter/400 upto 800 Mbp... Tripp Lite Isobar Supressor CyberPower CP1500PFCLCD 900 Watt Pure Sinewave UPS Logitech Extreme 3D Pro Joystick 
Other
upHere (3.5 inch Bay)Multi Function Card Reader... 
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Work Rig
(22 items)
 
CPUMotherboardGraphicsGraphics
Intel Core i7-6850K 4.5 GHz  ASUS TUF SABERTOOTH X99 LGA2011-V3  Asus STRIX GTX 980 ~1600 Core Asus STRIX GTX 980 ~1600 Core 
RAMHard DriveHard DriveHard Drive
32GB 3000MHz HyperX Savage DDR4  Samsung 850 Pro 512GB SSD  Samsung 256GB SM951 M.2 SSD PCIe 3.0 x 4 (PE246... WD 3TB Black SATA 6Gbs 
Hard DriveHard DriveHard DriveOptical Drive
WD 4TB Red in RAID 1 WD 4TB Red in RAID 1 ICY DOCK DuoSwap MB971SP-B Fits 5.25" Bay allo... LG WH14NS40 14x SATA Blu-ray Internal Rewriter 
CoolingCoolingCoolingCooling
CPU - Corsair Hydro H110  GPU x 2 - Nzxt G-10 x 2 + Corsair H-90 x 2  Lamptron FC-5 V2 Fan Controller 4 Aerocool Dead Silence 140mm Fans on the radia... 
OSOSMonitorMonitor
Windows 7 Ultimate 64 bit LINUX KXStudio AOC i2769Vm 27-Inch Screen IPS Monitor AOC i2769Vm 27-Inch Screen IPS Monitor 
MonitorMonitorMonitorMonitor
AOC i2769Vm 27-Inch Screen IPS Monitor BENQ GW2250 +1 Monitor Easymountlcd Triple Monitor Stand (002-0019) Homemade Extension and vesa mount for +1 Monitor 
KeyboardPowerCaseMouse
Top - CM Storm QuickFire TK (Red) Bottom - CM ... EVGA SuperNOVA 850 G2 - 80 Plus Gold Corsair Carbide Series 400R Cooler Master Storm Inferno 
Mouse PadAudioAudioAudio
Top of the Desk TUF Onboard Audio Cyber Acoustics Platinum CA-3550 Logitech H390 Headset 
OtherOtherOtherOther
ASUS Wi-Fi PCI Express Adapter/400 upto 800 Mbp... Tripp Lite Isobar Supressor CyberPower CP1500PFCLCD 900 Watt Pure Sinewave UPS Logitech Extreme 3D Pro Joystick 
Other
upHere (3.5 inch Bay)Multi Function Card Reader... 
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