2 cards always gets better performance than 1 for less. the tradeoff is needing 2 cards. 7850 crossfire will beat the 280x too.
AMD: Volcanic Islands R1100/1200 (8***/9*** series) Speculation/ Rumour Thread
I was going to explain what is it , but like i have only something reported by another guy on xs, i dont want give false explanation.
QuietMode: Low fan speed profile, core speed could throttle lightly between stock and Boost clock. ( max clock )
UberMode: More noise, higher fan speed, the core speed is trying to stay at max boost clock ( maybe higher tdp limit ? ).
In both case the max clock speed is allways the same.
I think this was the purpose of the slides we have seen, showing there's only a really little difference on performance between both ( 1-2fps ) ...
Dont blame me if it is absolutely not that on the end.
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Bouncing Zabaglione Bros.
Legend
Looks like it's 25th October for reviews and shipping of R9-290X, and 31st October for R9-290.
Well, that depends on the test stand. In open stand, little difference - in a badly ventilated case noticeable difference.
Thats the case with every card.. take a GPU like the 780 with a temp limit at 80°C ( dont remember the exact number ).. if you have 45°C as Tambient in your case.. good luck for maintain max boost of your gpu every second.
Only 2 days to go!! I wonder if NV will launch the 780Ti on the same day?
iMacmatician
Regular
delete please
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Deleted member 13524
Guest
Regarding the new bridge-less Crossfire:
- If there's no dedicated connector anymore, does it mean that any card compatible with the new Crossfire setup can have an "unlimited" number of cards?
Could I have for example 4x R7 260X as long as I have them connected to the same PCI-Express host (i.e. all in the CPU's PCI Express channels, not some in the northbridge and others in the CPU).
- Any difference in the way VRAM is handled? Is it still AFR so both cards must have an exact copy of whatever is filling the RAM?
- If there's no dedicated connector anymore, does it mean that any card compatible with the new Crossfire setup can have an "unlimited" number of cards?
Could I have for example 4x R7 260X as long as I have them connected to the same PCI-Express host (i.e. all in the CPU's PCI Express channels, not some in the northbridge and others in the CPU).
- Any difference in the way VRAM is handled? Is it still AFR so both cards must have an exact copy of whatever is filling the RAM?
Considering NV said already "mid-november" I doubt it
A1xLLcqAgt0qc2RyMz0y
Veteran
That date was for availability. I wonder if official reviews would be released on it before that date.
at least there is no hardware limit. The connector was also rather needed for rendering, you could have previously more cards in your machine and use them individually via opencl.
as long as they are in the same address space you probably can. 4x shouldn't be a problem either, there are 4x crossfire machines already. but going beyond that, it might not be supported (or at least never tested).
does not need to be the exact copy, but yeah, you need on one card what is needed for that frame. From HW perspective you could utilize resources from other cards or even main memory, but that way you might be just PCIe limited, two cards being slower than one.
And that's probably also the limiting factor, if you'd need to feed all data into 8 or 16 cards, you'd probably stall feeding them.
Embargo lifts 12 hours from now according to this. (13 hours, I keep forgetting I'm in a different timezone just now....)
http://hexus.net/tech/news/graphics/61513-amd-account-manager-reveals-radeon-r9-290x-launch-dates/
http://hexus.net/tech/news/graphics/61513-amd-account-manager-reveals-radeon-r9-290x-launch-dates/
The Bioshock numbers for Titan are wrong for sure, the perf difference to R9 290X could of course be explainable by whatever, but the difference to GTX 780 shows it has to be wrong for Titan.
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Deleted member 13524
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That's more like it.
