Massive temps from nowhere, O/C not stable Crysis crashing

Born_2_Kill_83

Born_2_Kill_83

Born_2_Kill_83

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Ok this is starting to drive me crazy, 3 months ago I had a perfect 3770k @ 4.8 with 1.350v prime95 stable never going over 85c (other specs 6990 and P8Z77). Completed Crysis3 with this spec.

I recently upgraded to CF7970GHZ and this is where my problems started.
I hit the wall O/Cing the cards at 1175/1700 @1.263v so I’ve backed it down to 1.250v @ 1125/1600 for a nice stable O/C, I’m sure my problem doesn’t lie here.

My Computer is stable in all benchmarks with the above GPU O/C and CPU @4.8, but Crysis 3 makes the system BSOD within 2-5mins of game play.

I re-ran prime95 and my temps are out the roof on what was a nice stable over clock now hitting 96c.
My PSU makes noises on a level I’ve never heard before while playing Crysis and when this happens my GPUs start getting hot quick and so does the CPU.

I’ve re-seated my CPU and applied more thermal paste but hasn’t had much effect.

Now when I take my CPU back to factory settings I can run Crysis3 fine no crashes and my GPU's never hit 80c even with my O/C as above. So unstable O/C on the CPU I thought.

Either my CPU has become very unstable and hot OR my PSU can’t cut it anymore or its had its day (TX750W). It seems strange all this has happened since I have upgraded to CF7970GHZ.

Could resetting the CPU back to stock have saved enough energy for the rest of the system to be stable and the PSU can cope better, or there’s possibly something wrong with my CPU.

As I left the house I had the CPU stable in Crysis 3 and prime95 at 4.6 @ 1.30v. I Started prime95 and the temps started high but the PSU was still spinning loud, the PSU shut up the temps seemed to come down nicely too.

Its either a CPU or PSU problem Im sure, as I said all ok in other benchmarks and memtest86 solid. Here is the guide I used to O/Cing my CPU and the settings I have in my bios.

http://www.overclock.net/t/1291703/ivy-bridge-overclocking-guide-asus-motherboards

Much need your advice please, on the verge of buying another PSU here but dont want to waste my money.
 
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3 months ago it wasn't quite the 20+c outside that it is now. The climb of 10c could easily be explained by this.
 
pgi947 said:
3 months ago it wasn't quite the 20+c outside that it is now. The climb of 10c could easily be explained by this.
Click to expand...

+1, try running CPU at 4.6 test if ok slowly up your speed test again till it crash's, even running at 4.6ghz is good you may be able to reduce voltage's as well.
 
It may be, how is the power layout on the tx750? Single or dual rail?

I know my dual rail psu (hx1000) really struggles once I hit high volts and load on my cpu and gpu's (1.48 & 1.38x2 respectively). Large single rails are the way forward.
 
Single rail

•Supports ATX12V v2.2 standard and older ATX12V 2.01 spec
•Ultra-quiet 120mm (140mm on TX750W and TX850W) double ball-bearing fan delivers excellent airflow
•80%+ energy efficiency at 20%, 50% and 100% load condition for less heat generation and lower energy bill
•99% Active Power Factor Correction provides clean and reliable power to your system
•Universal AC input 90~264V automatically scans and detects the correct voltage
•Dedicated single +12V rail offers maximum compatibility with latest components
•Over Current/Voltage/Power Protection, Under Voltage Protection, and Short Circuit Protection provide maximum safety to your critical system components.
•High quality Japanese capacitors provide uncompromised performance and reliability.
•Extra long cables support full tower size chassis.
•TX750W Dimension: 5.9"(W) x 3.4"(H) X 6.3"(L);
•MTBF: 100,000 Hours
 
pgi947 said:
It may be, how is the power layout on the tx750? Single or dual rail?

I know my dual rail psu (hx1000) really struggles once I hit high volts and load on my cpu and gpu's (1.48 & 1.38x2 respectively). Large single rails are the way forward.
Click to expand...

+1, they do say at least a 750W, but l like to have a bit in reserve and would got at least a 1000W 80% Gold standard. If running something like above + overclocking.

My next build will have at least that.
 
What res/monitor are you using?

If you are only using a 1920 res 60Hz monitor, I would suggest you simply reduce the overclock on the i7 3770K down to 4.5GHz...or 4.0GHz even as well as dropping the vcore.

Look at this bench here:
http://www.techspot.com/review/642-crysis-3-performance/page6.html

If you are only aiming for 60fps, even the 3770K at 4.0 should be plenty. Just focus your overclock on the graphic cards instead.

With the lowered power consumption on the CPU, it might just be enough for your to have your existing 750W PSU remain up to the job. To be honest, I think you could just consider not going crazy on the overclocking...due to the PSU constraint.
 
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Erm, a 750 will be plenty for your system and unless its faulty, getting an 850 won't help.

Do you run vsync on? If not, the faster card may just be making the CPU run faster and thus making it unstable. I assume the old gpu was bottle necking it somewhat
 
james_2k said:
Erm, a 750 will be plenty for your system and unless its faulty, getting an 850 won't help.

Do you run vsync on? If not, the faster card may just be making the CPU run faster and thus making it unstable. I assume the old gpu was bottle necking it somewhat
Click to expand...

Taking one card out even with the other O/Ced and the CPU at 4.8 makes the system stable again.

Ive got the HX850 PSU so will report back if it turns out my PSU is faulty or not powerful enough. Failing this I will downclock my CPU.
 
Ok having looked into it, it may indeed be a lack of power. I ran my 690 on a 750w corsair and it was fine (with a first gen i7). But it seems 7970s use quite a bit more power. I just assumed due to the similar performance power would be th same but not really..
 
The noise will probably be coil whine and the heat will be coming from the cards and the fact that it is now summer rather than winter, at the end of the day your 4.8ghz overclock will only have been stable with a low ambient temperature so stop being stubborn and reduce it. :p
 
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james_2k said:
Ok having looked into it, it may indeed be a lack of power. I ran my 690 on a 750w corsair and it was fine (with a first gen i7). But it seems 7970s use quite a bit more power. I just assumed due to the similar performance power would be th same but not really..
Click to expand...
7970 is fair bit more power-hungry then the Nvidia G104 based GPUs...it is only the extremely higher clocked GTX770 that come closer to the level of power consumption as the stock 7970 (with that said, an overclocked 7970 would be EVEN HIGHER power consumption).

Anyway, why did you move from a GTX690 to CF7970? I mean if strictly comparing single GPUs, I would go with 7950/7970 due to them being much better value comparing to what Nvidia got to offer...however, as far as multi-GPU goes, SLI still remain more reliable and generally smoother than CF, despite the reported frame rate might be lower (i.e. GTX690 vs 7990 or CF7950/7970).

mmj_uk said:
The noise will probably be coil whine and the heat will be coming from the cards and the fact that it is now summer rather than winter, at the end of the day your 4.8ghz overclock will only have been stable with a low ambient temperature so stop being stubborn and reduce it. :p
Click to expand...
^This.

http://www.techspot.com/review/642-crysis-3-performance/page6.html
If your monitor is only 60Hz, then having the 3770K at 3.50GHz delivering 64fps, 4.00GHz delivering 69fps, 4.50GHz delivering 75fps won't make any difference, considering your monitor would only be able to display 60fps max...
 
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