7950 Crossfire vs 680 SLI at 5760*1080 (Eyefinity/Surround)

[Rusty0611]

That score puts me 5th highest 2 GPU score on Heaven. Not bad for a pair of £260 cards.

Anyway, triple screen time - I'll do BF3 as that's the most interesting then I'm going to bed... I'm absolutely knackered. Oh need to give away a Sleeping Dogs code before bed too!

 

[Defy Belief]

91 degrees, eek.

 

[Tonester0011]

That's HOT!

 

[Rusty0611]

Indeed. I decided earlier today that I'm going to complete these benches then sell two monitors and go back to single screen. This will include DSR'ing the hot card.

I just don't play enough to have £600 of monitor sitting on the desk doing nothing.

Will give everyone the info they want first though .

 

[SkodaMart]

90+c was par for the course with my 8800 GTXs

It's a bit warm by todays standards however.

Thanks for the research Rusty. It is worth being a member of this forum just for tests and benchmarks like this.
I am sure that many users will appreciate your efforts.

 

[Tonester0011]

Indeed. I decided earlier today that I'm going to complete these benches then sell two monitors and go back to single screen. This will include DSR'ing the hot card.

I just don't play enough to have £600 of monitor sitting on the desk doing nothing.

Will give everyone the info they want first though .

I packed away one of my monitors, never really got on with eyefinity...just never felt right
I couldn't ditch the other monitor though, having the extra screen space is too much to give up, love it.

 

[Rusty0611]

I've got a spare monitor in the garage for that .

Card 2 - 65c, Card 1 - 92c.

LOOOL

Even considering Card 1 will be hotter due to card 2 dumping air on it... card 1 was at 85c on its own!

 

[Rusty0611]

Drum roll please... BF3 results are in. I did it 3 times to be sure I wasn't going mad... it's a LOT faster. More than I expected.

And you have to bear in mind I can't go a MHz above 1150 on the core due to my retarded top card. Graph incoming for those interested.

Then I will then bench the rest tomorrow evening with my window open and send back the piece of ****. No more partial results after this.

 

[{SAS}TB]

Sounds like a duffer mate

 

[Rusty0611]

Bearing in mind how rubbish my top card is, I would say a pair of half decent 7970's could extend my results by 10%!

I'm approximately 25% faster at this resolution with 7950 crossfire over 680 SLI. Very impressive results considering I was slower at 1080p with the same clock speeds.

There is a very big "BUT" though which I will attempt to explain tomorrow when I've completed all the games I said I would.

 

[nbkpsycho]

Very nice results mate, Pitty about your other card.

 

[flopper]

Bearing in mind how rubbish my top card is, I would say a pair of half decent 7970's could extend my results by 10%!

I'm approximately 25% faster at this resolution with 7950 crossfire over 680 SLI. Very impressive results considering I was slower at 1080p with the same clock speeds.

There is a very big "BUT" though which I will attempt to explain tomorrow when I've completed all the games I said I would.

not suprised, bf3 scaling and 7900 series at that resolution isnt bandwidth bound.

 

[GoogalyMoogaly]

I packed away one of my monitors, never really got on with eyefinity...just never felt right
I couldn't ditch the other monitor though, having the extra screen space is too much to give up, love it.

I was exactly the same with Nvidia surround.

I've just found out that Crossfire with eyefinity has pretty big problems on the Rampage 4 motherboards.

So however good these results, it doesn't look like AMD cards are an option. Unless I don't use eyefinity, but if I'm only gaming at 1080p is it going to make a lot of difference if I got 670 SLI or 79750/70 Crossfire...

Still interested in these results though.

 

[Tonester0011]

Very impressive.
Rusty, any chance you could bench CF 5760 on "Going Hunting" please? Just so i can add it to the benchmark thread graphs. That also gives my 7970s something to compare against.

Mine are 1225/1725 though, is that average or decent for CF?

 

[Rusty0611]

Very impressive.
Rusty, any chance you could bench CF 5760 on "Going Hunting" please? Just so i can add it to the benchmark thread graphs. That also gives my 7970s something to compare against.

Mine are 1225/1725 though, is that average or decent for CF?

If I get time - wanna get it sent back to OcUK on Saturday morning and I got the other games to bench first.

That's assuming card 1 doesn't spontaneously combust before then.

Right I'm going to bed - I will conclude this all tomorrow so that everyone can read what I have to say and have a look at the numbers when complete.

On the face of it so far AMD just shouldn't have competition in the high res bracket. You could sell your 670's/680's and swap to 7950's, make money on the change and get better performance on paper.

It just makes nVidia's cards look like a bit paradoxical almost. They make it so easy to go surround with the connections on them and decent SLI drivers but throttle them back with a 256 bit bus which as my BF3 results have shown is quite the limiter at this resolution considering my good 7950 was actually slower on the same 1150/1700 clocks @ 1080p.

 

[SkodaMart]

Wow, i'm shocked!

I am also wondering what the very big 'but' is however?

 

[Rusty0611]

Wow, i'm shocked!

I am also wondering what the very big 'but' is however?

Tomorrow - I have to think how to word it so that it's as objective as possible without undermining what I'm trying to do. It's a fine balance.

 

[Gregster]

Nice results Rusty and as expected, you can get better performance than me with 2*7950 @ 5760*1080 due to the poor 256bit memory on the 680s.

 

[whyscotty]

Did not expect that sort of difference -

 

[MyBrainz]

Looking good.. i almost wana buy another 7950 now