computer restarts while playing games

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ROCKSTARhjk

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Recently I did a system upgrade,from i3 I went to i7 and upgraded my gpu to sapphire radeon r9 290 upgraded the power supply to 900watts,complete overkill,well now the problem,is, the system performs fine everything is working normal except when I play a game. The system shuts down after a while when I start playing,this problem was not in the beginning,started only two or three days ago,I also checked the current on the 12v rail and it showed 11.789v and all other voltages were normal,now I don't know what the problem is,I need help I am a beginner and I did not perform fresh windows install
 
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markwp
Xfire for a pair of those gpu's will require (at max) ~800w which is roughly 67 amps. The psu you picked has an 83 amp 12v rail which theoretically leaves you with about 16 amps to run the rest of the system. I'm guessing you will be overclocking the cpu and running the typical dvd/blu ray, 2-3 hdd, ssd, etc.

While you will probably not use the system at full draw for more than brief periods, in my opinion you are still running the risk of being underpower at times. If it was me, I'd look at something like the Seasonic X-1250 (104 amps) or the Corsair AX1200 (100 amps).

You're investing a substantial amount of money in your rig and I'd hate to see you have issues when another $100-150 would give you just that small bit of extra...
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markwp

markwp

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You don't mention your m/b, ram or other internals nor do you specify the brand/model of the new psu. The 11.789v on the 12v rail is way too low. Is this at idle or at load?

Please provide detailed info on your rig - brand and model of ram, m/b, psu, etc. Also specify is your readings are taken at idle or load.

Mark
 
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ROCKSTARhjk

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The readings are at load.so the total system specs are
Intel i7 3770k
R9 290 tri x oc version
16 GB (2x8) corsair vengeance RAM
Asrock p67 RS 2.0
I-Tec 900 w power supply
3 tb hdd + 1tb Samsung ssd
Usually temps are normal under extreme load such as kombuster max reached temps were 76 on the gpu and 62 on the CPU but these readings were before the thing randomly started restarting during games at fist it restarted on bf4 then under clocked the CPU to 3.2ghz and the gpu memory to 1250 MHz and,core clock,to 950 MHz everything went,fine and then it started restarting during games again
 
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markwp

markwp

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Jan 22, 2013
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Sorry I didn't get back sooner.

Your gpu (under load) is going to use 380w or more in power. On a 12v line this equates to just under 31 amps. While I could not find your I-Tec in the 950w version you mention, I did find the 900w version. On that particular unit, there are two 12v rails - one of 21 amps and one of 33 amps. Seeing as how your gpu needs about 31 amps, it appears to me that even though your unit says "950w", in reality it is probably much lower than that and your gpu is overloading the 12v rail.

When using a power gpu, you need to evaluate how much current your psu can supply, NOT how many "watts" it says it can produce. For example THIS 750w unit from Seasonic has a single 12v rail of 62 amps - 8 amps more than the I-Tec, but rated at 150w less power.

In my opinion, you need a solid psu from a quality maker such as Seasonic, XFX or Corsair. Your I-tec is not capable or running that gpu under load.

Mark
 
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ROCKSTARhjk

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thanks u very much mark,indeed i realized that there was a problem with the psu and it just could not power up the thing so i have decided to go with a little upgrade
http://gear-up.me/chassis-and-psu/power-supply-unit/corsair-power-supply-rm-1000w-80plus-gold-fully-modular-atx-135mm-fan.html
what do u suggest about this power supply and i yesterday i received my shipment of an other r9 290 oc version from sapphire also received a new motherboard
http://gear-up.me/asrock-z77-extreme4-z77-ddr3-1600-4xsata3-raid-hdmi-gblan-atx.html
and thanks for the help man
also please tell me if this power supply and mobo are good for crossfire ???
 
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markwp

markwp

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Jan 22, 2013
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Xfire for a pair of those gpu's will require (at max) ~800w which is roughly 67 amps. The psu you picked has an 83 amp 12v rail which theoretically leaves you with about 16 amps to run the rest of the system. I'm guessing you will be overclocking the cpu and running the typical dvd/blu ray, 2-3 hdd, ssd, etc.

While you will probably not use the system at full draw for more than brief periods, in my opinion you are still running the risk of being underpower at times. If it was me, I'd look at something like the Seasonic X-1250 (104 amps) or the Corsair AX1200 (100 amps).

You're investing a substantial amount of money in your rig and I'd hate to see you have issues when another $100-150 would give you just that small bit of extra headroom that you may need.

Mark
 
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ROCKSTARhjk

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yes mark i will be overclocking the cpu to around 4.5 or 4.6 ghz and might even overclock the graphics card itself
and if i am not wrong u are talking about these psu's
http://gear-up.me/chassis-and-psu/power-supply-unit/seasonic-x-1250-1250w-80-plus-gold-retail.html
http://gear-up.me/chassis-and-psu/power-supply-unit/modular-psu-corsair-ax1200i-digital-1200w-80-plus-platinum-7-years-warranty.html
of these both which one would u suggest because i am running 6 additional fans on my pc so they will consume some current aswell the fans are
http://gear-up.me/corsair-fan-air-series-af120-performance-edition-120mm-30dba-twin-pack-27917.html
and thanks alot man, learned alot form u, honestly speaking
 
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markwp

markwp

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Jan 22, 2013
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I would take the Seasonic 1250. It has 8 of the 6+2 pcie connectors (you'll need 4 total; 2 as 6 pin and 2 as 8 pin) and will give you a little more breathing room.

On your case fans - just a note - Be sure you set up your fans to have positive case pressure (more intake than exhaust). 6 might be a bit of overkill depending on your case. If you are going to run a total of 6, set two up front as intake, two on the side (over gpu's) as intake, one as exhaust in rear near i/o shield and one as exhaust on top. Be as clean as possible with your wiring and try to keep all cables behind the m/b tray, or if not, bundled together and out of direct airflow paths of the fans.

Mark
 
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ROCKSTARhjk

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alright man thank u very much i will go with the seasonic

 
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