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Weird cpu performance. PSU or CPU itself?

Last response: in CPUs
November 23, 2012 2:11:02 AM

It all starts a few months ago when my last GPU broke down (idk the reason), at that moment I wasnt playing much games so I decided not to buy another. Last week I changed my mind and bought a new GPU and MB with the intention to keep my other components, and I've been having a lot of performance issues (weird lags and stuff) so I ran 3Dmark, here are the results:

I'm guessing the problem is the PSU, since the last GPU lasted less than 2 years. Or the cpu itself might damaged, idk...

nvidia GTX560 ti (new)
M5A88V-EVO (new)
Phenom II x4 955 (old)
3x2048 RAM Corsair (old)
PSU Seventeam ST-850Z-AF[850W modular] (old)
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November 23, 2012 10:54:51 AM

for a start you are using 3 sticks of ram so you will be using single channel not dual channel for dual channel you need to remove 1 stick and that could be causing a bottle neck in your system
November 23, 2012 12:44:06 PM

hafijur said:
The 3dmark11 score is slightly wrong shall I say. Your physics score should score at least 1000 higher. Check task manager background cpu usage and check anti virus software to see if it is scannning or check hdd usage.

I hardly think it's a malware, since i just formated the HD. Also all programs were closed when the tests ran.

for a start you are using 3 sticks of ram so you will be using single channel not dual channel for dual channel you need to remove 1 stick and that could be causing a bottle neck in your system

I removed one stick and ran 3dmark again, the results look a bit better but still suck:
Related resources
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November 23, 2012 1:16:46 PM

have you got your ram in slot 1 and 3 or 2 and 4 and is your ram settings in bios set to unganged
November 23, 2012 1:27:03 PM

Slots 1 and 3 (the two blue ones). I'm not familiar with ram setting in bios
November 23, 2012 1:29:05 PM

Just saw unganged mode: the setting is "always"
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November 23, 2012 1:34:20 PM

have you tryed to overclock your cpu and have you checked the temperature when it is at full usage with prime 95 and a temp monitoring software. to make sure it not throttling
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November 23, 2012 1:39:05 PM

give a screenshot of your cpu-z results if you can
November 23, 2012 1:41:07 PM

It's very dangerous a OC for me, cause the cpu temp goes to 70º (I live in a very hot city) with no OC. I tried to OC it up to 3.4 and 3.5GHz tho. The lag persists.

BTW, the lag is odd too, since there is no actual fps drop.
November 23, 2012 1:49:19 PM

here you go:
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November 23, 2012 3:09:16 PM

max temp for your cpu is 62 so you might be hitting that if your airflow is poor also your heatsink might need to be re-seated and did you replace the thermal paste when you changed your motherboard and remove all the old thermal paste.
November 23, 2012 4:54:30 PM

I forgot to do that, just replaced the thermal paste for a new one. New poor 3dmark scores:

Graphics: 4416
Physics: 2564
Combined: 2501
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November 24, 2012 2:50:21 PM

how old is your hdd
November 24, 2012 7:44:11 PM

About three years
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November 26, 2012 10:51:56 AM

think it could be your hdd starting to die could have bad sectors might be worth wile you getting a ssd maximising your system config
November 26, 2012 12:30:18 PM

is there a way to know for sure? maybe a stress test?
November 27, 2012 3:08:46 AM

Ran all the tests, including one that took 5 hours. Aproved.

kenny3105 said:

Do you ever notice any slowdowns with system or lockups or strange noises ?

No, windows runs perfectly smooth when im not trying to play...
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November 28, 2012 7:12:23 AM

are you sure your bios are set up properly.

Have you got any anti virus programs running in background when you are gaming ?
November 28, 2012 10:29:43 AM

Recently I looked up on the web for the correct timings for my Memory, and tried forcing them in bios, no luck on that either. So I set everything back to "Auto".

Yes, but I disabled it before running 3dmark
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November 28, 2012 12:12:28 PM

what bios version are you on
November 28, 2012 12:23:58 PM

BIOS Version: 1202
Build Date: 03/16/12
November 28, 2012 7:46:21 PM

Done it, Lag persists. Tried also tweaking the memory voltage up to 1.65V..
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November 29, 2012 9:35:27 AM

are your ram modules a tri channel kit or are they all different modules by same manufacturer ?
November 29, 2012 12:53:43 PM

I bought it with all my other old components directly from the store, this ram are triple channel, but my MB only supports dual channel (worked fine for my last MB tho).
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November 29, 2012 1:51:05 PM

Make sure your VCore voltage is at it's specs. Also, have you ever cleaned your computer? Try shining a light around your case if you think it looks clean. Might be alot of dust you wouldn't see otherwise.
November 29, 2012 3:17:47 PM

With AMD Overdrive I monitored vCore, it went from 0.97V to 1.34V while gaming.

Also checked the cores with task manager and cores 3 and 4 go around 45~65% (with very big dips) while cores 1 and 2 go around 90%.
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November 30, 2012 9:06:50 AM

your v-core is fine and most games are only able to utilise 2 cores anyway that's why the other 2 seem to be dipping
November 30, 2012 5:49:11 PM

Problem solved! I disassembled the cpu fan and cleaned it properly, also bought a new awesome thermal paste. New cpu temp is ~54ºC, lag is gone.

Thank you for your help! :D 

New 3dmark scores:
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December 2, 2012 10:58:36 AM

no problem knew we would get their in the end just a process of elimination nice scores :)