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Radeon HD 7950 vs GTX 670

Last response: in Graphics & Displays
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September 2, 2012 1:36:41 PM

Hello there, I'm building a new gaming rig and i have two choices for my GPU. The Radeon HD 7950 cost $95 less then GTX 670.

APPROXIMATE PURCHASE DATE: September.

USAGE FROM MOST TO LEAST IMPORTANT: Gaming ( Mostly all games, the earliest would probably be Borderlands 2 )

CURRENT GPU AND POWER SUPPLY: No Current GPU and for PSU I'm going for the Corsair TX 750W.

OTHER RELEVANT SYSTEM SPECS: i5-3750K with ASRock Z77 Extreme4.

PREFERRED WEBSITE(S) FOR PARTS: My own local shop,

PARTS PREFERENCES: No preference.

OVERCLOCKING: Yes Maybe SLI OR CROSSFIRE: Maybe in the future.

MONITOR RESOLUTION: 1920x1080

ADDITIONAL COMMENTS: Which has a better oc'ing potential.

More about : radeon 7950 gtx 670

September 2, 2012 1:41:48 PM

Well if you really want to OC, the 7950 is the way to go no question, as for only $300-330 you can get a card that will match a 680 in terms of performance (40% overclocks are common on nice 7950s).

However, the 7950 and 670 are really different cards... they're in completely different price brackets. If you can afford a 670 and are only marginally interested in overclocking, get that. If you don't want to shell out the extra cash or are very excited about chasing a big overclock (just for the sake of seeing how big an OC you can manage), get the 7950.

If you get decent luck on your 7950, an OCd 7950 will be similar to an OCd 670 in terms of performance.
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September 2, 2012 4:42:20 PM

At your resolution, the games you like to play, can have some bearing. Assuming similar "luck", in terms of the OC ability of individual cards, in some games the 670 does have a large "head start". It's whether that justifies the extra cost, that's very much open to question. Don't, necessarily, totally discount the 660Ti. The 7950 beats it across a range of games, but, in some, it more than holds its own (and it includes Borderlands 2, from many suppliers)
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September 2, 2012 10:56:22 PM

Gtx 670 no question about that.It smokes 7950 in most games.
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a b U Graphics card
September 2, 2012 11:00:26 PM

BigMack70 said:
Well if you really want to OC, the 7950 is the way to go no question, as for only $300-330 you can get a card that will match a 680 in terms of performance (40% overclocks are common on nice 7950s).

However, the 7950 and 670 are really different cards... they're in completely different price brackets. If you can afford a 670 and are only marginally interested in overclocking, get that. If you don't want to shell out the extra cash or are very excited about chasing a big overclock (just for the sake of seeing how big an OC you can manage), get the 7950.

If you get decent luck on your 7950, an OCd 7950 will be similar to an OCd 670 in terms of performance.



Well stated! :) 
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September 2, 2012 11:06:49 PM

Also just realized you want to play Borderlands 2 --> that's currently a freebie with most GTX 670 cards, so that may make the 670 a too-good-to-resist deal for you.
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a b U Graphics card
September 2, 2012 11:10:09 PM

the 660ti is better than the 7950 so the 670 just blows it out the water
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September 2, 2012 11:27:44 PM

devilofdeaths said:
the 660ti is better than the 7950 so the 670 just blows it out the water


Not really... the 660ti is overpriced at $300

660ti = 7950 but OC 7950 will smash an OC 660ti
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a c 87 U Graphics card
September 2, 2012 11:36:30 PM

660 TI does NOT equal a 7950. The 7950 has about double the memory bandwidth. Throw in some AA at even 1080p and the 660 TI can't keep up. The 660 TI also has crap minimum FPS and can't overclock much at all in performance. Even the much cheaper 7850 can go farther than the 660 TI can. If someone really wants a Nvidia card, then the 670 is the way to go right now. If someone wants better than 660 TI performance at a lower price, even with Borderlands 2, then the 7850 and maybe a ow end Nvidia card for PhysX are the way to go with some overclocking. If someone wants substantially better performance than the 660 TI at the same price (not counting Borderlands 2), then the 7950 is the way to go. If someone wants Nvidia really badly, then the 670 is the only reasonable option given the competition and even then, the much cheaper 7950 is generally able to meet or beat even an overclocked 670 in gaming performance.
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a b U Graphics card
September 2, 2012 11:45:55 PM

The 600 series of cards do not scale as well as the 7000 series in overclocking, simple english the 7950 overclocked will provide more performance than an overclocked 670. A 7950 @ 1.28v 1200Mhz performs in the range of a 670 OC @ 1300Mhz. Note that a 7950 OC to 1.15Ghz will perform like a 7970.
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a c 87 U Graphics card
September 2, 2012 11:52:00 PM

redeemer said:
The 600 series of cards do not scale as well as the 7000 series in overclocking, simple english the 7950 overclocked will provide more performance than an overclocked 670. A 7950 @ 1.28v 1200Mhz performs in the range of a 670 OC @ 1300Mhz. Note that a 7950 OC to 1.15Ghz will perform like a 7970.


A 7950 can meet a 7970 when it's at 975MHz GPU and 1375MHz memory. The GTX 600 cards don't scale as well because of their memory bandwidth bottle-neck. That means that increasing the GPU frequency scales poorly (especially on the 660 TI which has lower memory bandwidth than the 670 and the 680) compared to the Radeon 7000 series, but that overclocking the memory scales better than Radeon 7000 (not nearly enough to overtake the 7000 cards and that the memory can't be pushed far anyway really doesn't help Nvidia).

Also, only counting GPU frequency is wrong. Memory frequency is also important, especially on the Nvidia cards and how much voltage you need to get to a frequency doesn't change the performance that you have at that frequency.
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September 3, 2012 12:02:00 AM

This morning it was green koolaid being passed out, now it's red koolaid... :non: 

*sigh*

The 660ti is just fine at 1080p or less. I know it's got a crippled memory bus width, but that means nothing right now until you get above 1080p even with AA. In fact most of the custom 660ti models are FASTER than a stock 7950:



Link for the koolaid drinkers:
http://www.techpowerup.com/reviews/ASUS/GeForce_GTX_660...

Not everyone is interested in chasing big overclocks on their GPUs. For those people, the 660ti is an OK option. I think it needs to be 5-10% cheaper than a 7950 to be easily recommendable, but you're slanting things way too much.
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a c 87 U Graphics card
September 3, 2012 12:05:56 AM

It means a LOT, even at 1080p. It has low minimum frame rates regardless of the resolution and even at 1080p, AA can throw things off for it. If you don't have a fast enough CPU for its maximum FPS to mask its low minimums, then it is even worse. That review and that benchmark neglected to state this.

Also, the 660 TI can have huge overclocks on its GPU. That overclocking its GPU doesn't help much is the problem.

The crippled memory bus and ROP count is what keeps it from performing like the 670. It obviously means a lot regardless of resolution.
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September 3, 2012 2:11:58 AM

blazorthon said:
It means a LOT, even at 1080p. It has low minimum frame rates regardless of the resolution and even at 1080p, AA can throw things off for it. If you don't have a fast enough CPU for its maximum FPS to mask its low minimums, then it is even worse. That review and that benchmark neglected to state this.

Also, the 660 TI can have huge overclocks on its GPU. That overclocking its GPU doesn't help much is the problem.

The crippled memory bus and ROP count is what keeps it from performing like the 670. It obviously means a lot regardless of resolution.


Source (that actually tests more than like 2 games)? O wait I'll help you out: here is the absolute best analysis of GPU performance (techreport's) on the 660ti:
http://techreport.com/review/23419/nvidia-geforce-gtx-6...

They don't test a ton of games, but the 660ti shows no obvious signs of problems in areas like minimum framerate in current titles at midrange resolutions like 1080p due to its memory bus.
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a c 87 U Graphics card
September 3, 2012 8:18:31 AM

You haven't read many reviews, have you? Every review that talks about minimum frame rates shows that the 660 TI struggles in many games with minimum frame rates.

Also, again, the 660 TI and the 670 have the same GPU with the same configuration. That it isn't equal to the 670 is because of its lost memory controllers and related hardware (such as ROPs), not its GPU. Even at 1080p, it doesn't equal the 670, so that bus is obviously a weakness. That it overclocks like crap with the GPU and pretty well with the memory is further proof.

A Radeon 7850 can overclock a little better than the 660 Ti can in averages and significantly better in minimums. That makes the 660 TI a very poor value in comparison. Throw AA in and other settings and the 7850 shows significant wins. AA, tessellation, and more are weaknesses for the 660 TI. PhysX isn't a saving grace because a lower end Nvidia graphics card can simply be used as a dedicated PhysX card for the AMD card and still be as cheap as or cheaper than a 660 TI while then having a simply huge difference in performance with PhysX enabled and a significant difference without it.

http://www.anandtech.com/show/6159/the-geforce-gtx-660-...
http://www.tomshardware.com/reviews/geforce-gtx-660-ti-...

I'll do a few searches and get some more links.
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