ATI RD580: Dual x16 Crossfire Preview
by Wesley Fink on November 16, 2005 3:00 AM EST- Posted in
- CPUs
Overclocking and Integrated Graphics
For the past year we have watched ATI evolve as a chipset maker for the AMD Enthusiast. Each subsequent chipset seems to get better and offer more options and features AMD hobbyists have asked for. So what's new for the Enthusiast on the RD580?First and foremost, the RD580 breaks the HTT barrier in overclocking. Overclockers are used to having to drop HTT to 3X or 600HTT for their highest overclocks because the limit on current AMD HTT is 1000. RD580 requires no drop in HTT for even the highest overclocks. We were able to achieve overclocks in excess of 300 with HTT set at 5X. Utilities which showed HTT frequency indicated we were actually running at greater than 1600 HTT at these settings.
It is clear ATI has found a way around the current AMD limitation of 1000HTT, which will be a breath of fresh air to those trying to squeeze the most performance from their Athlon 64 processor. So how well does RD580 overclock? We can't quote exact numbers, but we can tell you the RD580 BIOS has not yet been tweaked for memory compatibility or top memory performance. We also used our own known OCZ PC3200 Platinum Rev. 2 dimms in testing since we are very familiar with how they perform. Even with the untweaked BIOS, we still reached overclocks even higher than the excellent performance of the Crossfire AMD Reference board! We can only speculate where this board might end up, but it is already a very exciting overclocker.
Integrated Graphics
Some may have noticed there is no small x in RD580, and they would rightly guess it means there is no Integrated Graphics version of the 580 chipset. RD580 will only exist as a Dual X16 chipset for discrete graphics.
ATI will soon launch the RS485 for Integrated Graphics. RS485 is a die-shrink of the RS480 chipset to .11-micron. This has allowed ATI to raise the graphics clock from the 300 used for RS480 to 400MHz on RS485. RS485 is expected to compete very well with the nVidia high-end GeForce 6150 chipset.
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michal1980 - Wednesday, November 16, 2005 - link
ati has been late for 2 years now. the 6800gt vs the 8xx series, the 6800 series out first.with the 7800 series they got killed.
the promised crossfire last year... were only starting to see it work.. on boards that cost 2x that of nivdia entry level sli (they said theres would be cheaper) the said the x18xx series would be out months ago... well about 6 months later and ur finally starting to see the 1800xt..
there crossifre boards are still running with ethier the amputated southbridge, or a uli southbridge.
ati has lately given alot of promises, but not alot to play with.
oh and the big news that the 1800xt in cross fire can beat the 7800gtx(256) in crossfire. NO DUH. i mean it beats the 7800gtx in a single card test, so why would 2 magically be slower.
plus why are they so dumb. isn't there next grahpics card core the 580? now there next motherboard is a 580? WOW talk about confusion... or maybe they've lost there minds and the whole time we thought the 580 was the next gen card, but in fact its just another motherboards.
WOW ati... i owned your stuff, but right now your on the suckage path
a bird in the hand is worth two in the bush.
i can play with 7800gtx sli, or gtx512 sli. i can play with a 32lane motherboard (a8n32)...
i can only dream of ati xfire
MDme - Wednesday, November 16, 2005 - link
I think the article was meant to show that ATI still has a fighting chance considering that the X1800XT exceeds the 7800GTX in ALL benchmarks (including nVidia strongholds like doom3 and quake4). Obviously it will also win in the SLI/CF tests. I think this is really quite some news in the ultra-highend segment where most enthusiasts play.It also gives us the question of will the X1800XT PE beat the 7800GTX 512, head to head.
Now, if only ATI can actually get the products to the market before nVidia comes up with something faster.
Competition is good. If not for competition, we will still be typing on our AMD K6-III 700MHz with 512MB SDRAM and a GF2 with 64 mb VRAM. :)
Megatomic - Wednesday, November 16, 2005 - link
Wesley, do you know if ATI is planning to release an analogue to the NF4 Ultra, i.e. a high performance motherboard with only one slot for PCI-e graphics cards?Wesley Fink - Wednesday, November 16, 2005 - link
The Sapphire "Grouper" we reviewed is on sale in Europe, buit it never made it to the US. It is also very expensive - more expensive than the Asus Crossfire whose review will post early next week. We are told there will likley be a couple of more "Grouper" boards, but we haven't seen them yet. MSI will release a full range of Crossfire chipset boards from full blown to basic - but we do not know yet which boards will reach the US and European markets.Megatomic - Thursday, November 17, 2005 - link
Well, I'd dearly love to see a highend RS580 mobo. I might even go for an RS480 if it ever gets paired with SB600.tuteja1986 - Wednesday, November 16, 2005 - link
I think ATI will take lead next year... This year was totally bad for them! just like NVIDIA had a bad year with Geforce 5800U.. Anyways ATI is good position for the future and we should see some great competition.Jedi2155 - Wednesday, November 16, 2005 - link
If it can beat the 7800 GTX in all tests then it certainly peaks my interest in the duo. Although if this is what they can do with their *failed* (my opinion) R520...just imagine the R580 :O.Cygni - Wednesday, November 16, 2005 - link
ATI just seems a little late to the party with each of their releases, and then once finally officially launched, even later to actually get to market.I wish em the best, but i dont even think the (possible) overclocking abilities and x16 Crossfire option will truly get people up to buy the board unless it dips into the $100 range that the SLI boards are now sitting in.
n7 - Wednesday, November 16, 2005 - link
Hawt!The more competition, the better.
Also, i really do think that it's only a matter of time before the ATi chipset is superior to nVidia's offerings.
Now we just have to wait, something no one likes to do...
Calin - Wednesday, November 16, 2005 - link
because the nVidia will develop new things for themselves. nVidia won't stay idle when ATI chipsets (graphic or otherwise) eat at their performance advantage