Cheers for the link - thats awesome. Got a very similar setup to that myself just wating on a new psu early next week so I can setup crossfire.Quote:
Originally Posted by cstkl1
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Cheers for the link - thats awesome. Got a very similar setup to that myself just wating on a new psu early next week so I can setup crossfire.Quote:
Originally Posted by cstkl1
A very cost-effective rig you have there. Nice :up:Quote:
Originally Posted by Mumid
Perkam
http://www.hardwarecanucks.com/forum...-x8-x8-cf.htmlQuote:
Originally Posted by L7R
:yepp:
Would be nice if some other site tried a 4870CF on p45 vs x38 comparison. Or better yet 4870x2 CFX when they come out to see if there are any bottlenecks ;)
Thanks mate. Soon to be changing PSU for PC power and cooling 750w QUAD Silencer and got another HD4870 sat here waiting to go in when the new PSU arrives, looking at the Crysis benchmarks in that other thread - cant wait :)Quote:
Originally Posted by perkam
yeah it should be alright..Quote:
Originally Posted by Zytek_Fan
try it and find out. If anything a quality 500-600w dont cost much nowdays.
not sure if your psu has 2x6pin..you need that or a 4-pin molex to 6pin will work
This in itself is very hard to do. Let me explain.Quote:
Originally Posted by postumus
Due to the different natures of the P45 and boards with X38 / X48 chipsets it is almost impossible to have a completely even playing field. Heck even when testing boards WITH THE SAME CHIPSET there will be differences in gaming performance. I will draw your attention to a few articles:
Techreport's X48 Showdown (See ET: EQ benches)
Bit Tech's Multi GPU benches with the Gigabyte P45 DQ6
OC3D's P45 Showdown
Not only are there performance differences between X48 and X38 (basically the same chipset) when equipped with similar hardware but there are even VERY large differences between P45 boards when it comes to performance. We aren't talking about 1-2%, more like 10-20% difference in some cases.
So, the question begs to be asked: in a Crossfire vs Crossfire review between the X38 / X48 and the P45, how do we know that the performance (or lack thereof) of the motherboard itself and NOT the PCI-E bandwidth is being brought to the forefront? The simple answer is that there is really no way to know unless there are MASSIVE differences in performance.
Writing a review of Crossfire performance between two motherboards with different chipsets, getting results that are within 5-10% difference between the two products and then saying that there is a bottleneck is a stretch at best. That is why I look at some preformance results and take them with a grain of salt.
Will a P45 bottleneck a pair of HD4870 cards? Heck no.
Dam good to know, sir.Quote:
Originally Posted by SKYMTL
Why didn't they save all the 4850 reviews and bring the to this sticky?
Thanks for clearing this. I Just read that topic in Hardware canucks forum too.Quote:
Will a P45 bottleneck a pair of HD4870 cards? Heck no.
I don't know if I cleared it up...seems like I just raised more questions in my own head. :DQuote:
Originally Posted by L7R
How big a difference is there if the 4870 is run at pice1 16x instead of 2.0?
This is in the same vein as what we have been discussing and truth be told, there is really no good way of finding out due to the differences in the mobos.Quote:
Originally Posted by Xcel
Sorry I couldn't bother reading the entire thread. So in other words pretty minimal then if it's within the error spread.Quote:
Originally Posted by SKYMTL
*continues reading the rest of the thread*
hi guys
just installed a powercolor 4870
http://img355.imageshack.us/img355/5606/dsc02615jy3.jpg
Idle temp with FAN Fix = 45% (ambient temp = 23º)
http://img299.imageshack.us/img299/699/4870dp0.jpg
:up:
Mascaras, you do realize that your idle temp will be high due in part to your use of Aero, right? Just ran a quick test on my stock HD4870 and found turning off Aero shaved about 5°C off idle temps.
as long as its not up at 80 im happy ^^ 840 core and i idle at 47C, fortunately my airconditioner running next to me is louder than the card will ever be :up: I think applying mx-2 to the core is a good idea for everyoneQuote:
Originally Posted by SKYMTL
(ambient is 74F)
http://gpuz.techpowerup.com/08/07/07/8bn.pnghttp://gpuz.techpowerup.com/08/07/07/4mx.png
Is there any way to force a X38/X48 motherboard to only use x8 instead of x16 PCI-E. I guess there isnt :/
I haven't found a way.
E8400@4Ghz
HD4870 Default
Catalyst 8.6 hotfix
Crysis
windows vista 64bit
1680x1050
DX9
High settings
Average = 45 Fps
http://img185.imageshack.us/img185/2...0504870qr7.jpg
I would suggest you retest with the Assault_Harbor timedemo included with that benchmark suite and run it two times. The first run should usually be discounted since it takes into account the frames per second on the Load screen which will of course lower your score.
PCI-E Scaling Review (THG)
I'm curious, does anyone know if this is a valid way of deactivating lanes?
mascaras has me drooling over one of these things. Only one problem though, I'm broke. :dammit:
why would you wanna do that?Quote:
Originally Posted by Shadout
ya same here :)Quote:
Originally Posted by ThatGuy16
but i can afford the card, im just waiting for a waterblock!