Intel Core 2 Quad with GTX 580 or 590

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DigitalVenom

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Aug 31, 2012
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Hi there i want to swap my 5750s crossfire for a GTX 580 or 590 would this be bottleneck by my CPU?

System Specs:
Asus P5Q PRO TURBO
Intel Core 2 Quad Q9505 @ 2.83Ghz
4gb Corsair RAM
Two Asus 5750 Crossfire
500 W NZXT PSU
Windows 7 Pro
 
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bigshootr8
Well the 70 and 50 both have the same system requirements so I would say that power draw is pretty close either way. I like how nvidia does there drivers although amd does a decent job as well. I've had both.
And I agree with the ram I think beyond your gpu if you were to upgrade it you would want to make a system overhaul in terms of everything
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There is no way to tell if it will bottleneck. No special formula unfortunately. I don't think a 580 would be though. A 590 may have a bottleneck. But I wouldn't get a 580. You can get a 7870, 660ti, 7950, and I think a 660 is stronger, but I am not sure. All of these are cheaper.
 
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660ti is prob the equiv of 580. Unless you're going triple screen, even the 580 will be a bottleneck in cpu bound games (bf3 multiplayer). The strongest card I would pair with a old q9505 without overclocking it would be a 7870/660ti (1080p). On triple screen that changes entirely and even a 580 would be fine. I myself will be pairing my q9550 OC 3.4-3.6 with a 7850 OC which performs around the same as a stock 7870, (maybe push it further to match stock 7950 =D)

Its better to grab a newer gen for the better power savings. AMD is generally offering a better performance/price ratio for most of its cards right now. A stock 7850 is almost twice as fast a 5770 if that is any reference and that was with old drivers.

http://tpucdn.com/reviews/Gigabyte/HD_7770_OC/images/perfrel_1920.gif

http://www.techpowerup.com/reviews/Gigabyte/HD_7770_OC/26.html

I would shop around for a 7850/660, 7870/660ti, (maybe 7950/670 if more gpu bound games are your thing) Triple screen I would go as far to recommend a 7970/680 or a 7870/7870 CF (depending on your game of course, friend is pairing a 2500k 4.5ghz with CF 7970 for triple 1080p.)
 
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Im not going triple but i also can't really upgrade my CPU since you know it's socket 775 mother board ill get a new build later like a new mother board, ram and CPU of course but ill just use the same PSU and 660 Ti if i get the 660 Ti. Really i just want to know will the 660 ti be bottleneck with one display on a q9505.
But thanks stickmansam and Sumukh_Bhagat and lt_dan_zsu it really helps!
 
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The 660ti should not bottleneck at all unless in rare extreme demanding maps (certain 64 player bf3 maps). I would reccomend the 7870 as it offers very similar performance with the latest drivers from both sides while being quite a bit cheaper, at least where I live. You can spend the extra bucks if you really really prefer Nvidia or like one of the Nvidia exclusive board makers.

For the 7870, the gigabyte windforce 3x OC has one of tr best price ratios(at least when on sale, reg price is about the se as the rest) and one of the best coolers for that range. The 7850 is also an option if you don't want to play maxed out and can save you some money. The 7870 can max out most of the games.

For nvidia, i am not sure about which brand are the betters ones though i know evga and asus are pretty good.

EDIT: Bottleneck is a very subjective term. I would only consider there to be a cpu bottleneck when the gpu can give playable framerates at the desired quality level but the cpu can't supply playable framrates. It really dosen't matter if your cpu is holding your gpu back by bottlenecking it from 80fps to 70 fps since you're still above the refresh rate of your screen. In that case, just increase the quality level so the gpu gives 70fps and the cpu 70 fps and there will be no more bottleneck.
 
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FYI the 7870 is the same strength as the 660Ti and costs ~$70 less.
 
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Honestly the entire CPU bottle-necking a GPU has been vastly overblown. Most games really do not tax a CPU all that much Multiple reviews on this site and others confirm that. Put a minor OC on your processor (you dont even have to up the voltage). It poses no risk on your system and your CPU would not be the bottle neck of any single GPU card on the planet.
 
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Ahh did not see the PSU brand. With a good brand like corsair or antec or seasonic 500 w would be more than enough but dunno about this brand.
No insta google reviews but the newegg ones are decent enough and you've been using it for a while without issue. Might want to check how much 12v amps it can put out and if it single or dual rail. If there are two 12v+ amps given then it is a dual rail. This info is usally found on the side of the psu but after running two 5750's, it should handle a 7870 okay esp with the power savings of this gen of cards.

EDIT: if you check the power consumption chart, the 7870 uses less peak power than 2 5750's.
 
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I wouldn't go as far to say there is no way to check if there is a bottleneck or not. What you can do is lower your settings in a game say you have battlefield 3 you could try that. And if by moving to say high to medium and medium to low your frames stay the same it could then possibly be your CPU. Also keep in mind that your ram may slow you down a bit to DDR2 is a slower platform in terms of memory. In terms of your power supply the 12v rail amps are pretty low around 33 I think I just saw and your efficiency is around 65 percent which is really bad!
http://www.newegg.com/Product/Product.aspx?Item=N82E16817116003
 
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I run a q9550/775 with a 6950 2gig card for gaming most of the time. does the processor hold back it's potential, yes. But it's a helluva lot better than the 5850 I had before that. your 5750's are holding you back so much you won't believe it. I wouldn't worry about any bottleneck.
 
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I agree two 5750's in CF probably aren't doing much in games like BF3. When you sit back and think on it though a C2D or CQD are both very dated. Almost like saying a AMD Athlon 64 FX 60 isn't holding you back. I would run something like FRAPS to see your frames and see if they change.

 
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Honestly you should just grab a 7870. Even if there is a bottleneck it will preform better than the 5750CF and you can move the 7870 to a new rig later. The C2Q are not that dated, especially if you're willing to do a minor overclock. In most games the C2Q can still pump out playable framerates at stock speeds. Your PSU can already handle the CF so it should be more than enough for the 7870. You can upgrade it later if your want more effiency and stability.
 
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A 4 year old processor is dated man. And with a super low efficiency level like 65 percent that would scare me to even bother using a 580 or above. he can do what he wants just sounds like a bad idea. People on the forums here keep suggesting going cheap on a power supply which is really poor advice and people keep suggesting people hold onto 4-5 year old processors which is again also poor advice if they are wanting to play modern games.
 
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Well the q9505 is comparable with a phenom ii 955 and it can overclock better. He should eventually upgrade his cpu but the bottleneck issue is imo overblown. The 7870 would still preform better than the CF5750. His PSU has been fine with two 5750 which use about 1.3x the power of the 7870 for quite a while with no issues. I agree that he could use a new PSU but that is not a priority.
 
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His PSU should be to only have 65 percent efficient power that means that when he puts a load on the PSU he's probably not getting all the power that its advertising. Also he is using DDR2 ram and 4 gigs at that he would be better off with 8 gigs of DDR3. A 7870 would be fine there are just a lot of things holding him back at the moment. A 4 year old platform.
 
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Yes but getting the 7870 would be better than getting say a i5 + mb + ram and sticking with 5750 CF. Grab the 7870 first, then grab the rest. Prioritize the GPU upgrade rather than the platform upgrade. His PSU is fine since the CF5750 on load already sues more pwoer than the 7870 which means he is actually reducing his power load by going to the 7870. GPU > Platform. I would say upgrade the 7870 now and maybe grab a platform upgrade when Haswell hits and grab that or Ivy if Ivy drops in price.
 
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