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System Freezes Quickly Under Prime 95

post #1 of 6
Thread Starter 
Alright, at first I thought it was just running FSX... but I couldn't believe my entire system was freezing up with what I was running:

i7 950 unclocked @3.07GHz
3 GTX 465 in tri-sli
24gb RAM, Triple Channel
X58 Classified Motherboard
850w PSU

So I ran Unigine Heaven; as soon as it finished running its test, it froze up.

Then I ran Prime 95... and less than 5 minutes, it froze again.

Right now I am going to run Memtest to see if the RAM is the issue....
    
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post #2 of 6
Hi,

If by "unclocked" you meant that your CPU isn"t OC, so the RAM may be the culprit.

I've got the same problem even though Memtest didn't see any errors after a couple of passes.
I had to use HCI memtest (in windows) which is more demanding (IMO) to see that even after 2 min I had memory errors.

I swapped memory and everything was fine after that.
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post #3 of 6
Thread Starter 
Quote:
Originally Posted by Kerian View Post
Hi,

If by "unclocked" you meant that your CPU isn"t OC, so the RAM may be the culprit.

I've got the same problem even though Memtest didn't see any errors after a couple of passes.
I had to use HCI memtest (in windows) which is more demanding (IMO) to see that even after 2 min I had memory errors.

I swapped memory and everything was fine after that.
Yeah...

I pulled 12gb out of it (3x 4gb RAM)... It seems to be running better, but I will find out when I run Heaven again.... FSX seem to run without locking up, but for a system spec like this, it should have better frame rate than it has...
    
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post #4 of 6
Quote:
Originally Posted by GundamWZero View Post
Alright, at first I thought it was just running FSX... but I couldn't believe my entire system was freezing up with what I was running:

i7 950 unclocked @3.07GHz
3 GTX 465 in tri-sli
24gb RAM, Triple Channel
X58 Classified Motherboard
850w PSU

So I ran Unigine Heaven; as soon as it finished running its test, it froze up.

Then I ran Prime 95... and less than 5 minutes, it froze again.

Right now I am going to run Memtest to see if the RAM is the issue....
A couple things come to mind what could freeze up your system:
- Vcore too low?
- Dram volts too low?
- Dram timings?
- Video cards OC'd too high?
- instabile PSU?

Your PSU unit is 850W, dunno if that's enough for your system to be honest..
6 hdd's, 3 videocards, all that ram, etc..

Have you even run any stability tests on your system before you started gaming? OCCT, Memtest, Prime95, IBT...
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post #5 of 6
Thread Starter 
Quote:
Originally Posted by DChat View Post
A couple things come to mind what could freeze up your system:
- Vcore too low?
- Dram volts too low?
- Dram timings?
- Video cards OC'd too high?
- instabile PSU?

Your PSU unit is 850W, dunno if that's enough for your system to be honest..
6 hdd's, 3 videocards, all that ram, etc..

Have you even run any stability tests on your system before you started gaming? OCCT, Memtest, Prime95, IBT...
I ran some benchmarking software (namely heaven) before I tried FSX. I also though about the power issue too, so I ordered a Corsair AX1200 psu. Once that is installed, I'll add the 12gb back in and try running it again. The 465s aren't overclocked, but being SLi'd may cause some issues in the power department.
    
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post #6 of 6
Thread Starter 
DChat;

You called it ....spot on.

Yesterday I tried a program called eXtreme Power Supply Calculator Lite, thanks to the "Overkill PSU Club" thread. After loading and calculating what my computer needed, I found out that my computer needed 1174 watts of power, 324w more than what my PSU (850w) can put out. Thank goodness that I got my AX1200 today. After installing it, my WEI shot WAY up....the i7 processor was once putting out a 5.3, now it's at 7.1.

In fact, every check resulted in a +7.0 rating.... So I added the other 12gb of RAM.

Next up... watercooling. Then.... overclocking.
    
CPUMotherboardGraphicsGraphics
Intel i7 Skylake EVGA Z170 Classified K EVGA Nvidia GeForce GTX 970 Hybrid EVGA Nvidia GeForce GTX 660TI 
RAMHard DriveOptical DriveOS
Corsair 16Gb Vengence LPX DDR4 SDRAM x6 HDDs 3.2TB HP BD/DVD+R/RW Hi Speed, HP DVD+R/RW Hi Speed Windows 10 x64 
MonitorMonitorMonitorMonitor
Acer G235H Samsung 30" LCD Acer G235H Acer G235H 
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Logitech G510 Corsair AX1200 1200w Corsair Obsidian 800D Logitech G502 
Mouse PadAudio
Glass Logitech Z5500 
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Reply
    
CPUMotherboardGraphicsGraphics
Intel i7 Skylake EVGA Z170 Classified K EVGA Nvidia GeForce GTX 970 Hybrid EVGA Nvidia GeForce GTX 660TI 
RAMHard DriveOptical DriveOS
Corsair 16Gb Vengence LPX DDR4 SDRAM x6 HDDs 3.2TB HP BD/DVD+R/RW Hi Speed, HP DVD+R/RW Hi Speed Windows 10 x64 
MonitorMonitorMonitorMonitor
Acer G235H Samsung 30" LCD Acer G235H Acer G235H 
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