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Not an error. Read Anand's conclusion... according to them, crossfire has the potential to scale higher than SLI. Once AMD releases new drivers, I'm sure you will see near or close to perfect CF scaling in more games.Quote:
Originally Posted by natty
No error. Look at the resolution it was tested on. That's where multi-gpu comes in handy bro.Quote:
Originally Posted by natty
woohoo they are all gone from newegg, didn't see that one coming ;)
I'm glad I was the first to get my 2 x HIS :D i did the rush processing so maybe mine will be the fastzors shipped lol
The scaling in that picture is better than perfect. How is that possible?Quote:
Originally Posted by Clairvoyant129
My mobo has one 16x and second 4x PCI-e lanes.. how much performance loss would I encounter if i paired 2x4870's in cf mode?
I understand your point, but look at other games where CF scales really, well near perfection.Quote:
Originally Posted by natty
But you are right, I'm actually not sure either about how it had better than perfect scaling, I'm just going by what Anand said.
I'm not debating crossfire scaling. I'm pointing to what looks like an error in that pic. Perfect scaling there would be 111.4 fps for the dual 4870's. And it shows 118.4 :confused:Quote:
Originally Posted by Clairvoyant129
that was posted by Derek Wilson, an editor on Anandtech about the scalingQuote:
greater than 100% scaling is due to margin of error combination for both single card and dual card tests in the vast majority of cases.
we also tested single card performance on an nvidia system and crossfire performance on an intel system, so the different computers will also add margin of error.
two card solutions generally don't scale at greater than 100% except in extraordinarily odd situations (where rebalancing loads might help with scaling on both individual cards -- but that's odd and rare).
I think you just want to point out an error in his statement more than what you see in that pic. I think the word perfect should not apply when comes to computuer stuff.Quote:
Originally Posted by natty
Wow, that thing occupies what, 5 slots??? Or don't i see it right... do you have a horizontally angled picture how tall that cooler actually is?! Anyway, in a crossfire setup these would be impossible, right?Quote:
Originally Posted by SKYMTL
Just asking out of curiousity.
For myself, i wait for new powerplay results with Cat 8.7... and rivatuner of course.
Probably not a good ideaQuote:
Originally Posted by RedBull78
should i wait for the 4870X2 or get 2pcs of this now?
is it dumb for me to ask if my 2900xt full coverage DD waterblock will work on the 4870? im not scared to mod the block as long as the core and ram are in the same spots.
Don't wait if you're not planning to run 4gpu's in your system. As for me, since my mobo has only one true 16x pcie I have no choice but to wait.Quote:
Originally Posted by bugkalot
why are they putting margin of error into benchmarks? still confused :confused:Quote:
Originally Posted by zerazax
And what about the fact that my mobo doesnt have pcie 2.0?Quote:
Originally Posted by BrowncoatGR
I can't believe im already behind even tho i upgraded my pc not too long ago...Wow.
After reading about 8 reviews, yours was probably the best. Especially mounting an aftermarket HSF, nice info and very helpful.Quote:
Originally Posted by SKYMTL
I think [H] did the worst job. 3 games tested? And they state that is more than enough, I strongly disagree.
Because they probably did more than one run and certain scenarios, the fps in CF was much higher than usual, driving the average of those runs higher and thus appearing to scale > 100%Quote:
Originally Posted by natty
Either way though, the scaling is apparently excellent in those games
I personally thought HardwareCanucks and TechReports were the best overall in terms of technical overview, quality and quantity of games, and settings and so on. Kudos SKYMTL!Quote:
Originally Posted by eleeter
Whatever they did it was pretty stupid. People assume they are looking at raw numbers taken from the same exact scenario. And as they admitted, better than 100% scaling only happens in 'extraordinarily odd situations'.Quote:
Originally Posted by zerazax
:down: for anandtech
Nothing is identical, but they can be very similar. So what if the second-slave HD4870 were a few percent better then the master card? You would see an increment of over 100%.Quote:
Originally Posted by natty
Not possible unless they were clocked differently or had different timings. This is a methodology issue, not a hardware issue.Quote:
Originally Posted by Eson
If that was the case then they should put a footnote at the bottom to explain that one card was better than the other. Anyway, I think zerazax already solved this mystery for us.Quote:
Originally Posted by Eson
Anandtech's testing has been sloppy at times, I think this is another instance of that.
It doesn't take anything away from the 4870, if that is what some people are getting at, that the review is flawed and the 4870 is not all that. Read the other 20 reviews, the vast majority agree that AMD has the best parts in their price category, especially the 4870. It largely invalidates the GTX260, which needs to drop to $300 to level things out.
That's why I look at all the reviews then make the judgment for myself based on the general consensus. And in the case of the 4870, the general view overwhelmingly is that it matches the GTX260 easily and at $100 cheaper, it is clearly the best buy