My PC is shutting down when gaming on a used HD 7850 I bought on Amazon

[john5220]

Update so far the problem does not seem to occur when running furmark stress test in window mode 1080p 4X AA

seems to be running fine but games atleast in fullscreen like metro 2033 and DayZ so far those are the 2 I have tested is causing PC to just shut off.

hmmmm

Now I have a HD 4870 also which uses 2 PCIE power connectors and my PSU plays it just fine.

I have a 460 Watts cooler master elite PSU and my system is a SSD with Pentium G3220 TDP 54W

I bought a XFX Ghost 7850 1GB video card used from Amazon I swapped it in today but I did notice one of the capacitors was bent so I straightened it with my finger. could this have caused any harm? it was not that bent really.

PC works fine for web browsing etc but it will turn off when gaming it only takes a few seconds of gaming to do so.

Could this possibly be a driver issue? i installed the latest drivers and did uninstall my old HD 4870 drivers.

I am so sad right now I live in the Caribbean so I don't know about shipping this thing back. I paid $55 for it but still a lot of money for me

 

[master_shake_]

bet its the power supply.

maybe check temps on the gpu while running.

 

[john5220]

temps reaching 77 degrees in furmark yet its not shutting down

But if its the PSU how come then my HD 4870 runs fine and that uses 2X PCIE 6 pin power?

And how come the problem isn't happening in furmark when I run it at 1080p 4X AA in window mode. Have not yet tried full screen

 

[master_shake_]

id have to wager that you were using a molex to pci-e adapter so you were spreading the amperage between both 18a rails.

with the 7850 you aren't splitting the current you are drawing from a single rail.

 

[john5220]

Hi i tried both the molex to PCIE power and the actual single PCIE power thats coming from the PSU direct. Same problem
So far its running furmark fine hmmm. I can definitely hear the PSU FAN spinning HARD, way harder than it ever has with my HD 4870
either that or its the video card fan I can't be certain but it sounds more like the PSU fan to me.
This makes no sense really. This PSU should run this card just fine.

Let me try running a less demanding game like black ops 2

 

[john5220]

same crap running black ops 2 even in window mode.

yet it runs furmark constant never crashing. Can't run any game I wonder if this could be a driver issue?

I think this card might be bad its a used card after all, bought from a seller on amazon.

 

[master_shake_]

ell you could uninstall all your amd drivers and reinstall them.

but i have doubts its a driver issue.

what are your temps while gaming not running furmark.

also when you run furmark run gpuz and see if the card is throttling.

 

[john5220]

temps max out at around 77 degrees but its night so 77 might be cold

Gonna try older drivers and see what happens

 

[VirtualLarry]

It's your PSU, I think. That PSU is known for being closer to a 300W.

That said, furmark won't do much. The drivers are specifically designed to throttle under furmark. Try renaming furmark.exe to the name of one of your games that causes your rig to shut off. Then run it.

 

[john5220]

You know whats weird, suddenly every program started crashing and when I removed this stupid 7850 card and put back my HD 4870 suddenly everything started working fine again. LOOOL this started happening just like that when I installed the old drivers that was on the CD i wanted to give it a shot to see if it might work.

So it seems the 7850 is a lemon someone pawned it off on me I should have known $55 was too good to be true. LOL

Now I am stuck with this crap who knows what is wrong with this card. funny thing is it looks so brand new even had the original sticker and everything on it that seals it to open it its like it was never ever opened from the box. Infact I do not believe this card was ever used though the somewhat bent capacitor makes me believe otherwise. Other than that this card is brand brand brand NEW!!!! there is no question about it.

 

[john5220]

Noway Larry

http://www.bit-tech.net/hardware/graphics/2012/11/05/msi-radeon-hd-7850-1gb-review/8

7850 with a full gaming rig pulls 178 watts on full load according to that link.

 

[john5220]

ok according to this its 254 watts on full stress but thats counting the entire PC not so?

http://www.guru3d.com/articles_pages/msi_radeon_hd_7850_power_edition_oc_review,6.html

so definitely NOT the power supply. Hell my CPU is a pentium G 54W TDP that only runs at round what 30 watts max most of the time in games?

this PC will hard shut down even in black ops 2 menu this makes no sense and what off all the crashing apps happening like a ghost is in my PC? and it all works fine when I pull out the card?

and watch this 4870 is 286 watts on gaming

http://www.tomshardware.com/reviews/radeon-hd-4870,1964-15.html

so why would it run my 4870 so easy yet can't run the 7850 which is a lot less current? this makes no sense.

 

[john5220]

so I put metro 2033 on very low even 800x600 res

and it ran a lot longer before the PC shut down on its own

Also on my PSU it says 12V1 18A AND 12V2 18A

meaning 2x12 volt rail?

my PSU is also 4 years old if that makes a difference. I also disabled all my PC fans and have the tower open and it seems that by doing this the game runs a little longer. Putting updated stopped the crashing of all programs also.

Card works fine on browsing the net etc I am wondering now if it really is the PSU hmmmmm

renaming furmark to metro didn't do anything but then I didn't allow it to run that long

 

[john5220]

few questions

why would my PSU be the problem when it runs my HD 4870 just fine which happens to be a power hungry card with double PCIE 6 pin power connectors?

And also since my PSU says dual 12v rail with 18A on each rail how much useful watts does that produce in real world for 12v components?

And could it be that since this PSU is 4 years old it has degraded? but again back to my first point if so why then does it power the HD 4870? unless that card somehow uses less watts on more power connectors? that would be really strange if it was the case

and finally could any of this be my fault for straightening the bent capacitor? its pretty solid and snug the way it was all I did was straighten it. Could this behavior be from a bent capacitor?

 

[Erenhardt]

I am so sad right now I live in the Caribbean so I don't know about shipping this thing back.

LOL

I had to... sorry.

By the sounds of it, the problem is your PSU, or rather the dust inside it. Clear it.

If its under warranty use compressed air - take it out of PC before blowing air through. Do not blow it while its connected to AC. Don't connect it to AC directly after using compressed air - wait 5 minutes or so.

If its not under warranty and you are not afraid - take it out of PC and take off the covers. Remove all dust, fur, hair, etc with hand. Use brush to remove dust particles that are otherwise out of reach. Blow some air in the areas you can't reach.

 

[Ryanrenesis]

I highly doubt dust is the culprit here.

You'll need to acquire another PSU @ at least 450W to really test if the 7850 is in working condition or not. You can either buy the cheapest reliable PSU you can find new and then return it after testing at the cost of the restocking fee OR buy a really good PSU like the Rosewill Capstone 450W to keep for good, since PSUs can easily be used on another machine without issues.

 

[redzo]

-- HD4870 needs 2 x pcie in order to function.
-- HD7850 needs only 1 x pcie for power.
At this point I think that it is safe to admit that, overall, a 4870 is more power hungry than a 7850. This is simple logic and I think that there is no need to google for power related comparisons between the two GPUs.

The 7850 may be trying to squeeze more current from a single 12v rail than the 4870 does, even if the 4870's total power consumption is higher,

As someone pointed out in this thread, maybe that the 7850 asks for too much juice from a single 12v rail than the 4870 does, the psu can't handle it, it switches into protected mode and it powers itself off. I think that the only way to clarify this is to test with another PSU. If the symptom shows itself with another psu, only then it will be safe to say that you ended up with a 7850 lemon.

EDIT: I also find it hard to believe that dust cleaning ever fixes this type of issues. All the electrical components inside any psu have a limited lifespan. Ass time goes by, all psu's will start loosing performance due to internal component wearing. Dust cleaning will not help.

 

[Erenhardt]

Try to lowering GPU clock 50Mhz.
Try lowering graphics memory clock by 50Mhz
Try both

 

[john5220]

ok guys I have school now but will be back later to try this. And yes my PSU is extremely dusty have not been cleaned in 4 years since it was bought.

I also have a generic PSU aswell, does same 36 amps on 12v rail maybe I could try that to see aswell?

i will try a downclock to see if it works

 

[redzo]

If its single rail design, it might shed some light into the issue: http://www.silverstonetek.com/techtalk_cont.php?tid=wh_single12&area=en

 

[john5220]

no it has a 2X 12V Rail each with 18A

But what I want to know is could this be an issue with the card being faulty? So far the card ran all night playing a music video on youtube and it has not once shut down.

 

[davie jambo]

psu I reckon also

Is the CPU overclocked ? That might be it also

 

[john5220]

Try to lowering GPU clock 50Mhz.
Try lowering graphics memory clock by 50Mhz
Try both

stock CPU pentium G3220 haswell NO FANS I disconnected all fans only powering 1HDD and 1 SSD I even disconnected the DVD drive same thing.

I downclocked the video card from 975 to 925 and VRAM by 50mhz

Still crashes infact it crashes faster when downclocked LOL offcourse I have had the PC on all night if that matters.

 

[john5220]

btw guys I have a Xtech 600w generic power supply in new condition but very very old.

its a 36amp on single rail 12v, worth a try?

 

[master_shake_]

If it a single rail yeah