will 6870 crossfire be limited by core i7-860 at stock 2.8ghz?

[digitaldurandal]

A stock i7 860 will turbo to 2.93 GHz at a minimum. Even if you were 100% CPU bottlenecked (which you won’t be), 3.2 GHz is at best a ~9% performance gain.

Perhaps this is true, but often affecting minimum frames first, 9% minimum frames can often make a good impact on a game, ie min from 55 to 60. Of course I point out the optimal situation for it 😀

As everyone is saying though, there is no reason to get two of those with that monitor. Buy one and upgrade to a nice monitor with the remaining cash.

 

[cusideabelincoln]

Yes it will, look at your own link. The i7 at stock speeds even bottlenecks the 5870cf and 6870cf is actually even more powerful due to better scaling.

I think you need to look at the link again...

The only game showing a clear CPU bottleneck is X3: Terran Conflict.

There is no practical difference in the following games. Heck some games show zero difference:
et:qw
cod4
batman
left 4 dead
coj
crysis
far cry 2
serious sam hd
just cause 2
lost planet
hawx
call of pripyat
aliens vs. predator
dirt 2
battleforge

Fear, UT3, and RE5 show minor differences, but these games get well above 60 fps. And I would bet if you paired a faster graphics options with the stock i7 the framerates would be more than dual 5870s.

In WiC there is no difference between a 3.2 and 3.6 GHz i7. Considering his processor will turbo up to these speeds, there isn't much of a concern here either.

Also dual 6870s are not faster than 5870s. They are at best the same.

 

[nix253]

guys sorry to replay late....n thanks for the great responses....i'll b gaming on sony bravia 32" ...n would like to do so on either 1680 x 1050 or 1920 x 1080 resolutions

 

[nix253]

n guys if i want to do the mild overclcking like upto 3.3 ghz then how do i do it? i mean i'm quite noob, if not totally, in this matter n don't know much....i mean what setting do i've to enable or disable in BIOS n then i just wanna use the oc softwares provided by asus to do so....i mean i ain't an enthusiast or anything but seeing ur replies i think it might benefit me a little to just mild oc upto like 3.2 ghz or if possible 3.3 ghz..... so how do i do it please reply?

n it'd be really great if someone can just tell me just in a few orderly steps to achieve 3.3 ghz using the asus oc utilities ...or even if thru bios then please in an orderly manner....

 

[toyota]

guys sorry to replay late....n thanks for the great responses....i'll b gaming on sony bravia 32" ...n would like to do so on either 1680 x 1050 or 1920 x 1080 resolutions

why would you ever go below 1920x1080 with 6870 crossfire? also 1600x900 would be the proper res to use below 1920x1080 since they are both 16:9.

 

[digitaldurandal]

Also dual 6870s are not faster than 5870s. They are at best the same.

1920x1200
http://www.guru3d.com/article/radeon-hd-6850-6870-crossfirex-review/7
BFBC2 = 6870cf win by 2fps
CODMW2 = 5870 win by 2fps
Dirt2 = 6870 win by 13 fps
Farcry2 = 6870 win by 33 fps
Anno1404 = 6870 win by 15 fps
Crysis Warhead = 6870 win by 9 fps
Metro2033 = 6870 win by 4 fps

6870 wins 6 out of 7 tests at 1920x1200

http://www.widescreengamingforum.com/wiki/ATI_Radeon_6870_6850_-_Featured_Review_Page_4
at eyefinity resolutions it only gets worse for 5870cf
6870cf beats the 5870cf at 5760x1080 in every game test, only losing in the Heaven benchmark.

I stand by my statement that two 6870s are actually more powerful than two 5870s due to scaling.

 

[WaTaGuMp]

You could be bottle necked if your beer doesn't have a vortex designed bottle.

 

[cusideabelincoln]

1920x1200
http://www.guru3d.com/article/radeon...firex-review/7
BFBC2 = 6870cf win by 2fps
CODMW2 = 5870 win by 2fps
Dirt2 = 6870 win by 13 fps
Farcry2 = 6870 win by 33 fps
Anno1404 = 6870 win by 15 fps
Crysis Warhead = 6870 win by 9 fps
Metro2033 = 6870 win by 4 fps

6870 wins 6 out of 7 tests at 1920x1200

http://www.widescreengamingforum.com..._Review_Page_4
at eyefinity resolutions it only gets worse for 5870cf
6870cf beats the 5870cf at 5760x1080 in every game test, only losing in the Heaven benchmark.

I stand by my statement that two 6870s are actually more powerful than two 5870s due to scaling.

Browse through these benches...
http://www.anandtech.com/show/4051/nvidias-geforce-gtx-570-filling-in-the-gaps/4

For all practical purposes they are the same, even though I could point, with verocity proclaiming I'm right, the 5870CF is faster in more tests it isn't. But then we're arguing over 2 fps? Meh, who cares. I'm sure there are cases where the 6870 provides a significant advantage, just as I'm sure there are cases the 5870 does. In the end I still stand by my statement, and the CPU (MONITOR, LoL) bottleneck in question isn't a concern now that we know he's gaming at 1080p.

 

[nix253]

so i guess 6870 cfx is a go for me.......... thanks a lot guys for your advices....i was in a real doubtful situation...... i mean i'm getting a hold of all the technical part there is to all high end computing but a little slow...:\:sneaky:......i'll still try to mild oc my processor if possible

n if u guys got time then can you take a look at this thread also started by me n please tell me if everything's ok.... i'll b really grateful..........

http://forums.anandtech.com/showthread.php?t=2126596&highlight=