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Is my 670 2GB gpu getting enough power from my 750w PSU?

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June 28, 2012 10:55:12 AM

I have a Cooler Master GX-750W (RS-750-ACAA-D3), http://www.coolermaster.com/product.php?product_id=6643, PSU, and I was wondering if the card is getting enough power to run BF3. There are 2 6+2pin adapters plugged into it straight from my PSU. My other system specs are:
AMD Phenom II X4 955 @ 3.2GHz CPU
Biostar TA890GXB-HD Mobo
EVGA GeForce 670 2GB DDR5
2x2GB 4GB Corsair 1066 RAM (Not sure full info)
1TB Hitachi 7200rpm
500GB WD 7200rpm
LG DVDRW Drive
Cooler Master GX-750W

Basically, I have PCI-E x 2.0, but the card is 3.0 which shouldn't really matter. The game crashes everytime I play lasting 2-10 minutes on any in-game settings, nvidia control panel settings (if opened), any overclock, and voltage change. Every game runs perfectly fine at max settings with 60FPS+ on a single 23in Acer LCD LED monitor 5ms. The temps when playing Battlefield 3 are around 56-72 degrees. I have the latest nvidia drivers, and have tried old ones as well. No luck.

So, should I use the molex adapters that came with the card, new PSU, configure some settings?? What could be so wrong that it only crashes that game, even though MANY people have crashing problems with high end PCs.

Thanks
a c 158 ) Power supply
June 28, 2012 12:17:57 PM

A system with a single GTX 670 requires a 500W PSU with at least 35A on the 12V rails and two 75W 6-pin PCIe power connectors. The GX 750W has 60A on the 12V rails and is MORE than sufficient for your build. Your real-world power draw isn't more than 280W: http://www.guru3d.com/article/geforce-gtx-670-review/8
279W at full load with a highly OCd, power-hungry i7-965...

Random is spot on about the quality of that PSU. They're not that much better than CM's craptastic Extreme Power PSUs and I would sriousy consider replacing it with a good quality 500-550W PSU; 650W PSU if you're going to SLI the 670. That being said, if this is only happening in BF3, then it's not likely to be a PSU issue....much more likely is a driver/software issue that simply hasn't been ironed out at this point.
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a c 87 ) Power supply
June 28, 2012 6:03:10 PM

randomkid said:
Theoretically, your PSU should be good in terms of capacity. But I am not sure about your Cooler Master psu. The review is not so good for it:
http://www.jonnyguru.com/modules.php?name=NDReviews&op=...

Any chance you can try another psu?

Jonnyguru tested the RS-750-ACAA-E3, which is built by Seventeam, iGamer4tv has the RS-750-ACAA-D3, which is built by Enhance; so that review is not really applicable.
Here is a review for the D3:
http://www.xbitlabs.com/articles/cases/display/psu-550w...
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a b ) Power supply
June 28, 2012 6:31:13 PM

don't 670's only require 2x6pin, and not 2x 2+6pin?
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a c 158 ) Power supply
June 28, 2012 7:27:48 PM

Yep, that's why I stated that a single card requires two 75W 6-pin PCIE power connectors.

Edit: Not sure if any of the OC models require different PCIe power connectors (i.e. one 6-pin and one 8-pin).
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June 28, 2012 7:50:01 PM

randomkid said:
Theoretically, your PSU should be good in terms of capacity. But I am not sure about your Cooler Master psu. The review is not so good for it:
http://www.jonnyguru.com/modules.php?name=NDReviews&op=...

Any chance you can try another psu?


Thanks for the responses everyone. So, basically yeah I had to get the cheapest deals at the time of building my PC. I do not have access to another PSU at the moment, but If I were to buy one it would be this one: http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Yes, I only have 2x 6+2 pins, so I NEED only a 6pin? In that case I would probably need a new PSU.
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June 28, 2012 9:02:54 PM

that is actually a little much for the power supply, you won't need that much wattage but it is good to be safe!
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June 29, 2012 1:33:37 AM

coper210 said:
that is actually a little much for the power supply, you won't need that much wattage but it is good to be safe!


I kind of wanted to be safe, but I guess my PSU sucks! -_______-
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a c 272 ) Power supply
June 29, 2012 1:56:38 AM

The 650 TXM is a modular unit which might be nice, but it is also significantly more expensive than its non modular counterpart, you can pick up a 650 TXV2 for $60 after promo code and rebate compared to $85 for the TXM
http://www.newegg.com/Product/Product.aspx?Item=N82E168...


Silvune said:
Jonnyguru tested the RS-750-ACAA-E3, which is built by Seventeam, iGamer4tv has the RS-750-ACAA-D3, which is built by Enhance; so that review is not really applicable.
Here is a review for the D3:
http://www.xbitlabs.com/articles/cases/display/psu-550w...


Thats the first review of the enhance built GX 750 i have seen, too bad it shows the same results as the seventeam unit. Excessive ripple on the 3.3V rail, and now on the 5V rail too, not an improvement at all, but at least they were smart enough not to send the new ones out to reviewers.
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a c 158 ) Power supply
June 29, 2012 11:51:42 AM

hunter315 said:
Thats the first review of the enhance built GX 750 i have seen, too bad it shows the same results as the seventeam unit. Excessive ripple on the 3.3V rail, and now on the 5V rail too, not an improvement at all, but at least they were smart enough not to send the new ones out to reviewers.
http://www.xbitlabs.com/images/cases/psu-550w-850w/gr13.png

:o  :lol: 
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July 1, 2012 9:55:32 AM

hunter315 said:
The 650 TXM is a modular unit which might be nice, but it is also significantly more expensive than its non modular counterpart, you can pick up a 650 TXV2 for $60 after promo code and rebate compared to $85 for the TXM
http://www.newegg.com/Product/Product.aspx?Item=N82E168...




Thats the first review of the enhance built GX 750 i have seen, too bad it shows the same results as the seventeam unit. Excessive ripple on the 3.3V rail, and now on the 5V rail too, not an improvement at all, but at least they were smart enough not to send the new ones out to reviewers.
http://www.xbitlabs.com/images/cases/psu-550w-850w/gr13.png


Basically, I got it to run "Okay". First thing I did was uninstall all graphics drivers, used driver sweeper in safe to mode to get rid of all the rest, uninstalled every utility application for my GPU like MSI Afterburner and EVGA Precision X, uninstalled BF3, redownloaded Bf3 on Origin, installed the game, turned off my computer, took the power out of my graphics card and decided to use the 2 molex adapters that came with the card and plug in my power supply to ALL 4 molex adapters (so none was just dangling with nothing in it, all 4 had PSU power connected to it), turned on PC and installed latest Nvidia beta drivers without installing the HD audio or PhysX, Changed nvidia control panel settings for a bit (just changed to single display mode, max prerendered frames to 1, and power management to performance. Now, I used IE to sign into BF3 and play, joined a 64 man server on Operation Metro, change settings to default Medium setting on game, 1920 x 1080 resolution, and I average about 53-91FPS. 53 is when outside in the city part rather than a building and when there are 100s of explosions going on. Other than that it runs smooth with 64 players. I am way too scared to changed the settings higher on the game or nvidia control panel.

I'm going to build a new rig soon, maybe ill post the specs here, and then see if the issues still occur. Soo, no best answer yet..
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