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Psu causing componets to overheat after Gpu installation

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June 17, 2013 2:38:38 AM

I am a noob when it comes with PSUs so don't by harsh at me :ange: 
Two days ago I bought a new GPU the Sapphire HD 7770 Ghz OC Edition and I installed it on my Pc using correct drivers etc. When I started gaming after 10 minutes I touched my case and it was very hot so I opened a HW monitoring program and saw that Mobo was at 80 *C , CPU at 65 *C and GPU at 60 *C.
I asked a technician that lives next to me and told that it was the Psu which was bad quality and insufficient. So what do you think ? Should I upgrade to the Corsair VS Series 650W (CP-9020051-EU) Psu or is it something else

PC Specs :
Operating System
Microsoft Windows 7 Ultimate 32-bit SP1

CPU
AMD Athlon II X4 640

RAM
4,00GB Dual-Channel DDR3 @ 669MHz (9-9-9-24)

Mobo
MSI GF615M-P33 V2(MS-7597) (CPU1)

GPU
Sapphire HD 7770 Ghz OC Edition

Psu
450w power supply made by a greek manufacturer (Bad quality)

Hard Drives
466GB Western Digital WDC WD50 00AAKX-001CA SCSI Disk Device (SATA)

More about : psu causing componets overheat gpu installation

a b ) Power supply
a b $ Windows 7
June 17, 2013 6:26:50 AM

What case and how is it cooled? Are you relying solely on the PSU to extract heat from the case?
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June 17, 2013 7:38:38 AM

GhislainG said:
What case and how is it cooled? Are you relying solely on the PSU to extract heat from the case?

Yes but when the Gpu is not used the system runs cool which led me and the technician to think that there isn't enough power so the parts strugle to get it so they get hot
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a b ) Power supply
a b $ Windows 7
June 17, 2013 8:11:16 AM

What are the specs of your PSU? It's possible it isn't powerful enough (it should get quite hot), but if it didn't provide enough power, then you should have issues with the GPU while gaming. How are you getting heat outside of the case? You need to take into account the extra heat from the GPU (some heat is exhausted through the back, but that isn't enough). A new PSU will help only if it draws more air from the case, but an efficient PSU draws very little air. The fan on my Seasonic PSU doesn't spin until the PSU works hard enough; therefore I can't rely on it to keep my case cool.
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June 17, 2013 8:22:46 AM

GhislainG said:
What are the specs of your PSU? It's possible it isn't powerful enough (it should get quite hot), but if it didn't provide enough power, then you should have issues with the GPU while gaming. How are you getting heat outside of the case? You need to take into account the extra heat from the GPU (some heat is exhausted through the back, but that isn't enough). A new PSU will help only if it draws more air from the case, but an efficient PSU draws very little air. The fan on my Seasonic PSU doesn't spin until the PSU works hard enough; therefore I can't rely on it to keep my case cool.

PSU SPECS : (I have heard that cheap psus give half vatage than advertised)
Type ATX12V V2.2
450 W
DC Output +3,3V22 A
DC Output +5V15 A
DC Output +12V114 A
DC Output +12V216 A
Efficiency65%
Connectors
Main connector (20+4 Pin)1
PCI-E (6+2 Pin)1xPCI-E (6+2 Pin)
SATA5
Floppy (Y-cable)1
Cooling Single Fan
Fan Characteristic Auto Speed Control
Fan 120mm1
Maximum RPM1900 rpm
Minimum RPM1700 rpm
Protection
Over Current Protection
Over Power Protection
Short Circuit Protection
Size
15 cm 14 cm 8.6 cm

My gpu exhausts through the back but when i open my case while gaming and i put my hands where it exhausts
the air isn't very hot (Its actually somewher in the middle of hot and cold)
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June 17, 2013 8:33:52 AM

Also I think that the maximum combined +12 Volt continuous current rating is too low. Could that be true ?
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a b ) Power supply
a b $ Windows 7
June 17, 2013 9:52:23 AM

You wrote "I have heard that cheap psus give half vatage than advertised". They often don't provide the advertised power, but they rarely are that bad.

Your GPU draws 100W or less at peak or 8.5A max. on the 12V rail. It should rarely draw that much power while gaming.

You wrote that your case is very hot while gaming, but the air coming out of the GPU is warm. Most areas of the case shouldn't be hotter than the air inside it. Did you touch the case near the PSU or the PSU itself? A 65% efficiency PSU will get hot since lost energy is converted to heat. My conclusion is that your PSU is powerful enough, but it's poor efficiency causes it to generate a lot of heat.
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June 17, 2013 10:09:07 AM

GhislainG said:
You wrote "I have heard that cheap psus give half vatage than advertised". They often don't provide the advertised power, but they rarely are that bad.

Your GPU draws 100W or less at peak or 8.5A max. on the 12V rail. It should rarely draw that much power while gaming.

You wrote that your case is very hot while gaming, but the air coming out of the GPU is warm. Most areas of the case shouldn't be hotter than the air inside it. Did you touch the case near the PSU or the PSU itself? A 65% efficiency PSU will get hot since lost energy is converted to heat. My conclusion is that your PSU is powerful enough, but it's poor efficiency causes it to generate a lot of heat.


So if I buy a new PSU with 85 % efficiency will it solve the problem ? Also I touched the PSU itself.

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a b ) Power supply
a b $ Windows 7
June 17, 2013 10:22:39 AM

If the PSU is what gets too hot, then it will solve your issue.
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