older PC strange behavior ?

[oldnick]

i just bought gtx 1060 for my main PC and put my old hd 7970 to my old PC to use it as secondary PC for the living room instead of collecting dust
 
the older pc specs :
i5 750 (stock speed)

GA-P55A-UD3R
hd 7970 ghz 
8 gb ram
Antec EarthWatts GREEN 650W 
windows 10
 
i tried to install few games to test it out with the hd 7970 doom works perfectly with 80 - 120 fps on high sittings but gta 5 works for few minuets then crash 
 
there is no heating on the cpu or the gpu i tried two different copy of gta 5 and both have the same problem (crashing after few minuets of playing with good 40 to 80 fps with high sittings)
 
both of gta 5 copys works fine on my main pc (6700k - gtx 1060)
 
there are other things i think worth mentioning
 
i tried to stress the system with prime95 and after few minutes it stop stressing some of the cores or all of them even (it goes from full load to 1% to 20% something like that) that is happening always in the blend test and large fft but the small fft test do stress the system as long as i keep it running ( i tried +12 hours with no problem) 
 

also when i try to install a game or unrar it (gta 5 on both cracked copy and doom ISO file) it says there are missing files or currpted files (something like that) so i have to unrar or install the game on other pc then send it to this PC (some games install or unrar just fine)

 

there is no heating issues at all even under full stress system never goes above 70c

also i tried the pc with other PSU (cx600) and it had the same behavior

  

what could be the problem ? i dont want to spend more on it unless i have to

[Pittman90]

I think that the issue might be that your old cpu is not powerful enough for GTA 5, it is a demanding game and a i5 750 is pretty old by now

[oldnick]

6 hours ago, Pittman90 said:

I think that the issue might be that your old cpu is not powerful enough for GTA 5, it is a demanding game and a i5 750 is pretty old by now

it works very good while in the game then crash all of a sudden

 

also how do you explain the stressing tests strange behavior ?  

[JoostinOnline]

5 minutes ago, oldnick said:

it works very good while in the game then crash all of a sudden

 

also how do you explain the stressing tests strange behavior ?  

You say it never goes above 70c, but are you looking at the individual cores?  The sudden drops could be explained by thermal throttling.

 

Please open HWMonitor, run Prime95 until it drops to a low usage percentage, and take a screenshot of HWMonitor.  It would be useful to see the stats (not just temps) on everything.

[oldnick]

3 minutes ago, JoostinOnline said:

You say it never goes above 70c, but are you looking at the individual cores?  The sudden drops could be explained by thermal throttling.

 

Please open HWMonitor, run Prime95 until it drops to a low usage percentage, and take a screenshot of HWMonitor.  It would be useful to see the stats (not just temps) on everything.

yes all cores never goes above 70c on HWMonitor

[JoostinOnline]

1 minute ago, oldnick said:

yes all cores never goes above 70c on HWMonitor

I'd still like to see a screenshot of everything please.

[oldnick]

9 minutes ago, JoostinOnline said:

I'd still like to see a screenshot of everything please.

very well here it is :

it just ran for few minutes then first core usage drop  

 

 

 

 

aslo here is the core prime95 window text :

 

 [Jan 24 21:01] Worker starting
[Jan 24 21:01] Setting affinity to run worker on logical CPU #4
[Jan 24 21:01] Beginning a continuous self-test on your computer.
[Jan 24 21:01] Please read stress.txt.  Choose Test/Stop to end this test.
[Jan 24 21:01] Test 1, 6500 Lucas-Lehmer iterations of M12451841 using Pentium4 type-2 FFT length 640K, Pass1=640, Pass2=1K.
[Jan 24 21:03] Test 2, 6500 Lucas-Lehmer iterations of M12451839 using Pentium4 FFT length 640K, Pass1=640, Pass2=1K.
[Jan 24 21:04] FATAL ERROR: Rounding was 0.5, expected less than 0.4
[Jan 24 21:04] Hardware failure detected, consult stress.txt file.
[Jan 24 21:04] Torture Test completed 1 tests in 2 minutes - 1 errors, 0 warnings.
[Jan 24 21:04] Worker stopped.

[JoostinOnline]

The voltage seems low for a stress test.  The CPU can handle up to 1.4V, but the motherboard only gave it a maximum of 1.136V.  That being said, my motherboard is out of commission, and my laptop has a cooling problem (f*cking Haswell), so I can't compare that.  They're different architectures anyway.

 

Maybe someone else can give some input on the voltage.

[oldnick]

2 minutes ago, JoostinOnline said:

The voltage seems low for a stress test.  The CPU can handle up to 1.4V, but the motherboard only gave it a maximum of 1.136V.  That being said, my motherboard is out of commission, and my laptop has a cooling problem (f*cking Haswell), so I can't compare that.  They're different architectures anyway.

 

Maybe someone else can give some input on the voltage.

i thought it could be the voltage !

but i am no expert in that so i still need some advice  

[Pittman90]

On 1/24/2017 at 9:35 PM, oldnick said:

i thought it could be the voltage !

but i am no expert in that so i still need some advice  

 

 

Did you under volt your cpu? I would factory reset your mobo bios if you don't know if you did or not 

[oldnick]

9 hours ago, Pittman90 said:

Did you under volt your cpu? I would factory reset your mobo bios if you don't know if you did or not 

no i didnt 

is the cpu voltage lower than its default value ? 

[Pittman90]

20 hours ago, oldnick said:

no i didnt 

is the cpu voltage lower than its default value ? 

 

1.136 seems low but it may be different since I have a 4670k 

[JoostinOnline]

Try going into your BIOS and setting it to manually give 1.15V.  That's still 0.25 volts under max safe.  Then run a stress test.  Watch the temps of course, as higher voltage means higher temperature.