Sign in with
Sign up | Sign in
Your question

7770 CF vs 7870

Last response: in Graphics & Displays
Share
August 13, 2012 1:36:58 AM

Hi, im thinking of buying either two SAPPHIRE RADEON HD7770 GHZ EDITION OC VAPOR-X or The sapphire 7870 Ghz OC edition.
my cpu is at 4.0Ghz 3570K 8 gigs of 1600 RAM. Which one should i get. Oh btw i got an asus z77 deluxe mobo

More about : 7770 7870

August 13, 2012 1:50:41 AM

In my opinion get the 7870. Crossfire with a low end card isn't recommended.
Related resources
August 13, 2012 2:07:21 AM

I couldn't find after a quick search a review of 7770 CF compared directly to 7870; I could only find the 7950, and performance was pretty comparable. As the anandtech bench makes clear, the 7870 is about 2x as faster, which you can also see by comparing the specs of a 7770 to a 7870: http://www.tomshardware.com/reviews/radeon-hd-7770-7750... vs http://www.tomshardware.com/reviews/radeon-hd-7870-revi.... The 7870 basically IS just two 7770 glued together (look at stream processors, texture units, etc.). But then what do you lose by going for the CF configuration? Simple: memory bus width and memory quantity. The two 7770s will behave like they have 1GB of VRAM, plus they will only have a 128-bit memory bus. This will make a bigger difference at higher resolutions and higher AA settings, as well as in more modern games. So go for the 7870.
August 13, 2012 2:10:00 AM

vram and memory bus will be the moving factors along with crossfire/sli inconsistencies will push for the 7870 choice
August 13, 2012 2:11:23 AM

motorneuron said:
I couldn't find after a quick search a review of 7770 CF compared directly to 7870; I could only find the 7950, and performance was pretty comparable. As the anandtech bench makes clear, the 7870 is about 2x as faster, which you can also see by comparing the specs of a 7770 to a 7870: http://www.tomshardware.com/reviews/radeon-hd-7770-7750... vs http://www.tomshardware.com/reviews/radeon-hd-7870-revi.... The 7870 basically IS just two 7770 glued together (look at stream processors, texture units, etc.). But then what do you lose by going for the CF configuration? Simple: memory bus width and memory quantity. The two 7770s will behave like they have 1GB of VRAM, plus they will only have a 128-bit memory bus. This will make a bigger difference at higher resolutions and higher AA settings, as well as in more modern games. So go for the 7870.



Please don't confuse things. A 7870 isn't basically two 7770's glued together... the 7870 is a single GPU card.


You can also get micro stutter from a duel GPU setup, your also more likely to have driver issues.
August 13, 2012 2:13:06 AM

aaab said:
Please don't confuse things. A 7870 isn't basically two 7770's glued together... the 7870 is a single GPU card.


You can also get micro stutter from a duel GPU setup, your also more likely to have driver issues.


By "two 7770s glued together" I didn't mean that it's a dual-gpu card like the 690 or upcoming 7990. I just meant its silicon--the GPU--is basically just two copies of the 7770's, which is accurate. If my poetic license made things unclear, I apologize.
August 13, 2012 1:25:16 PM

i got a coolermaster pro gold series 600W. So i should get a 7870 huh. Should i save for the 7950 or its not worth the 3-4 month wait to get it. Its more expensive so i might need more time to save up money but still im thinking about that one since 7770 is not an option
August 13, 2012 1:25:18 PM

oh and will they fit my HAF X 942 case?
August 13, 2012 1:37:38 PM

They will fit. You should wait 2 days and get GTX 660 Ti instead. It will be priced under HD 7870 and will perform better than HD 7950.
August 13, 2012 2:30:31 PM

Sunius said:
They will fit. You should wait 2 days and get GTX 660 Ti instead. It will be priced under HD 7870 and will perform better than HD 7950.

+1
August 14, 2012 1:41:37 AM

dude i cant find it im in greece. None of my shops have it neweg dont have it neither does e bay
August 14, 2012 11:37:29 AM

You can't find what? GTX 660 Ti isn't released yet. Wait a few days :) .
August 14, 2012 1:54:12 PM

rumors say its better than 7800 series and its going to be priced 299 dollars i hope its not overpriced in euros here in greece
August 14, 2012 2:21:49 PM

how can it get suchFPS with only a 192 interface. 7950 has 384 memory interface i mean. Are those true?
August 14, 2012 3:24:06 PM

Because memory throughput is not such a major limit on overall performance, especially at lower resolutions. (What's interesting is that even the 670 and 680, with their 256-bit buses, are bandwidth-limited at high resolutions and AA settings more than they are limited by the amount of memory.) The 660 Ti seems deliberately targeted at the 1080p consumer. That seems to me like a good choice--the majority of gamers aren't above 1080p yet, not even close, and especially not people whose purchase price maxes out around $300.
August 15, 2012 2:43:19 AM

am at 1920 x 1080 so it will surely outperform the 7870 and the 7950? and more important will i enjoy gaming for a good time for the money spent? I dont want EVERYTHING maxed but yeah i want to enjoy my games.
August 15, 2012 10:34:22 AM

It will be on par with HD 7950. But will be cheaper + you get nvidia bonuses :) .
August 15, 2012 12:07:20 PM

The choice is simple a HD 7870 Ghz Edition card, its new Bios should be available at the end of the month which will see AMD cards employ a turbo boost feature for heavy loads and bumped up clocks. I am not a fan of crossfiring lower tier cards you will run into problems, overall a 7870 GE beats a 580 hadsomely and will likely sit in the GTX 660ti bracket, and be under $300.
August 15, 2012 2:19:22 PM

yeah but i has two six pin connectors i just got a 600W coolermaster pro gold. Just able to handle 1 of these. TDP must be higher than 7870 as well as temps
August 15, 2012 2:20:18 PM

so wait im still confused whats my best option then......
August 15, 2012 2:32:27 PM

7870 Ghz Edition without a doubt.
August 15, 2012 2:46:44 PM

so the 660Ti is definetly out of the question? I mean how futureproof is the 7870
August 15, 2012 3:37:50 PM

No it's not out of the question. I think it's even better option for you than HD 7870 because it's gonna be faster. It will have comparable performance of HD 7950 for price of HD 7870. Check the review above!
August 15, 2012 3:43:37 PM

I would not say that entirely, the GTX 660ti will likely cost $300-330 for reference and 350-380 for OC designs while the 7870 will be sub $300. Also the benches are done on the old drivers and unmodded GCN chips, AMD have released GHZ edition bios with new cards on the 7970/7950/7870 models, Toms benched the new 7970 GE with catalyst 12.7 and the gains were so high that the 7970 and the 680 are dead heats, this will likely see the 7950 match the 670 and in turn the 7870 match the 660ti, added to this bonus AMD vanilla cards can be flashed with the new GHZ edition bios for the respective models, the reclockings alone account for around 10% pefromance gains, 12.7 sees more gains on top of that.

It is a option but the 660ti is going to be out priced at that price point.
August 15, 2012 3:47:34 PM

Don't start with flashing BIOS.. not unless you want to brick your card.

Link for the benchmark that was so big? The only benchmark I've saw with GTX 660 Ti was the one above, and in that GTX 660 Ti just crushed HD 7870, and no mild overclock will change that.

Plus, it will not cost $350 :) . You're looking at $299.

Lastly, you get nice bonuses together with GTX 660 Ti: Adaptive Vsync, PhysX, FXAA, TXAA, support for 3 monitors without any sort of expensive adapters.
August 15, 2012 5:32:10 PM

These cards are designed to address the fact that AMD's vanilla cards were designed to trump VLIW4 and Fermi, which it did comprehensively, the issue was by releasing early they showed there hand and in turn Nvidia have aggressively clocked all GK's well above the Ghz Barrier, even the AMD clock bumps are not as aggressive but it is fact that performance yields with drivers have seen significant performance improvements.

Yes I said $300 for a basic reference 660ti, for the Twin Frozrs and windforces, DUII's you are looking at $50 extra easy. The 7870 GE with Sapphire cooling solutions costs well bellow $300, if you factor the 660ti and 7870 will perfrom within margin of error the 660ti is just Nvidia trying to milk the market, problem is you don't need a 660ti when a 7850 can handle any single monitor setup maxed.

At the end of the day whether the OP decides on a 7870/7950($330) or 660ti they will all max out with ease, how do I know this my 6970's do so there we have it overkill or buy to budget??????
August 15, 2012 7:36:22 PM

That's not margin of error GTX 660 Ti lead. It's significantly faster than HD 7870. Just wait for tomorrow's reviews, you'll see.
August 15, 2012 11:37:45 PM

so all i have to do is wait? i mean i want to spend my 330 euros for the best i can get. I can get a 7870 OC from sappire. If i need less to get a twin frozrs 660 Ti from MSI and get more performance then thats it.
August 16, 2012 1:32:29 AM

ok i decided to go for the 7870 but my question is gigabyte oc windforce 3x or MSI twin frozr. The MSI is louder and less OCed but i dont know if gigabyte is as good as MSI
August 16, 2012 5:51:42 AM

I don't like the Gigabyte cards as they have Blue PCB's which looks awkward for blending, I prefer the Red or Black PCB's, the MSI twinfrozr III's are good cards, that said the Gigabyte Windforce III is also fantastic.
August 16, 2012 6:11:20 AM

sarinaide said:
I don't like the Gigabyte cards as they have Blue PCB's which looks awkward for blending, I prefer the Red or Black PCB's, the MSI twinfrozr III's are good cards, that said the Gigabyte Windforce III is also fantastic.



red would look really odd on a asus z77 deluxe.
August 16, 2012 10:00:42 AM

I said prefer and that is for colour coding, but that is user preference, I have a ROG so yes Red/black, he has a Asus Deluxe with squeemish shades of blue so the Gigabyte may code well, that said if you see the Blueness of that PCB, it could make Jack the Rippers stomach churn.
August 17, 2012 3:19:18 AM

question. 7870 windforce 290 euros. Twin frozr 660Ti 329 euros. Which is better?
August 17, 2012 3:22:43 AM

the 660ti is better than the 7870 at most games. though I cant say its 39 euros better(which is almost 50$ USD)
August 17, 2012 10:50:36 AM

The 660ti is a FPS pusher but flimsy on compute power, TH now has the review and at the end of the day the 7870 and the 7950 came out rosy, needless to say that AMD have new bios's for all Tahiti XT and Pro soon with the Pitcairn XT and Pro's which sees massive performance boosts for free. If Nvidia don't drop the price to $250 this card is going to take a monumental beating by the 7870.

August 17, 2012 1:00:52 PM

so what you are saying is either wait a bit for the price to go down or get the 7870 since its cheaper
August 17, 2012 3:06:45 PM

Basically yes, The nvidia cards are all memory interface limited, when CPU clocks are insane its average and high FPS beat AMD but almost always have lower lowest FPS scores, when it comes to direct compute a GTX 680 will barely hang with a 1900XT and thats where radeons show massive yields. Also consider that AMD cards are all significantly lower clocked than all the 1ghz + keplers but all have much higher overclock bins than nvidia, its the great leveler, GCN was sandbagged enough to see what Nvidia were going to give. Already TH anand have shown that the new 7970 GE's beat the 680, AMD is working on the rest now.


Yes wait for the 7870's price to level out, if it drops to $270ish then its a great card, highend performance at mainstream prices. Alternatively the HD 7950 is expected to fall to the $330 at that price point its an attractive card.
August 20, 2012 12:38:49 PM

That is probably the vanilla 7870 with a 860mhz core clock plays the 1050mhz on the 660ti, Also 1300mhz memory speed plays 1500mhz. The NV is exactly what it is an thats a FPS rendering machine, but all round the 7870 is close enough, its cheaper what with a ASUS DUII costing $330 its well cheaper for high end performance. AMD destroys Nvidia in GPGPU and compute power where games require more compute the AMD cards take center. In a years time that 192bit interface will gimp that card while the 7870 will look rosier than the day it came out.

Ultimately:

AMD: Balanced performance(render/compute), immense overclocking headroom, great eyefinity and multi card performance, lower cost, bios updates and maturing drivers constantly give good gains.

Nvidia: High rendering speeds, Fast core clocks, low power, Physx, 3D, Adaptive VSync
August 20, 2012 1:03:34 PM

I will quote something i read long ago Mac vs PC. Microsoft vs Google. Intel vs AMD. There's no shortage of monumental rivalries in the tech industry. But the royal rumble between ATI and Nvidia for dominance of 3D graphics is one of the roughest of the lot.

The contest is really AMD vs Nvidia. After all, AMD snapped up Canadian graphics outfit ATI back in 2006.

More importantly, however you slice it the histories of ATI and Nvidia have been very closely intertwined. Both started out as specialists in PC graphics and have since branched out into non-PC platforms such as games consoles, mobile devices and set-top boxes.

I won't get into who is better not going to start a flame war lol i would just say Depending on which games you intend to play, one will perform better than the other.
August 23, 2012 11:03:24 AM

got the sapphire 7950 OC instead, weekly offer on overclockers hope i can play maxed out on 1920 x 1080
August 23, 2012 12:01:27 PM

Yes you will play everything maxed out without much fuss.
August 25, 2012 12:46:02 AM

im going to need a cpu upgrade right? is a 3570K enough to power it? Might be OCing 4.2Ghz
August 26, 2012 8:35:43 PM

The 3570K will be absolutely fine for that GPU. I doubt that you will even notice a difference if you overclock to 4.2 ghz from 4.0 ghz
May 27, 2013 3:05:06 PM

I am getting tired of all these fanboys arguing. Get a gpu from 3dfx.
!