AMD To Launch Radeon HD4890 "RV790" In April

[Macadamia]

Wut.

Well it's confirmed on CHH that RV790 uses TSMC's most expensive 55nm process. For what, then?

As for extra units, we don't know, and they aren't telling.


FUD has a big chance of getting everything wrong. 480SPs, 8800GT match, all etc. His ATi sources have a pretty mediocre track record.

[munim]

Wait, can't we extrapolate how fast this chip will be at 950mhz by other people's runs at 950 using current 4870s on water/ice/LN2? Provided we believe that there are no extra shaders etc.

[Rammsteiner]

Maybe people should wait abit. Since it could just be a RV770 tweaked for higher clocks as much places suggested....

Abit just died man

Anyway, too many different rumours going around right now.

Dont know if I would upgrade to it anyway, think 4870X2 will stand its ground for a while. No matter if it's a OC'd or upgraded RV770, in the end it's the same generation. If you wait only a few more months, if you can of course, you'll have next-gen architecture right there with some real improvements At least, normally it's like that, ain't set in stone though

[drizzt5]

Great news if true but i'll say it again why would anyone upgrade? No new game is coming that warrants an upgrade. That's been the case for a while unfortunately.

Well, I agree with you if you mean the people who just bought the newer nvidia and ATI cards. But not everyone has new cards and depending on how this is priced it could be a great card to buy instead of the gtx285 so you don't have to deal with multi-gpu's

Agreed, these days money's best spent on getting a better/bigger monitor. Arguing over monitors is less exciting than graphics cards, though.

Agreed

[okorop]

Great news I am waitng for those chips.....

But the shaders will remain the same as in rv770 or not?

[SNiiPE_DoGG]

Great news I am waitng for those chips.....

But the shaders will remain the same as in rv770 or not?

youve been spamming quite a lot today my friend,

if you had read the thread you wouldn't need to ask foolish question like that

[Mechromancer]

It will NOT have extra units, just more optimized shaders/TMU etc etc.

Please give us the source of your information. I'm interested now!

[Lightman]

Please give us the source of your information. I'm interested now!

Well, I don't need to know his sources
For me it's enough to know his track record regarding ATi stuff.
I've read his posts back when ATi was still independent company and 99.9% cases he is spot on.

[XSAlliN]

They should put better VRM's on HD 4850 and HD 4870 ,overclock it and rename it to HD 5850 and HD 5870. At least that's what nVidia would have done in this situation.

[SNiiPE_DoGG]

They should put cheaper VRM's on HD 4850 and HD 4870 ,overclock it and rename it to HD 5850 and HD 5870. At least that's what nVidia would have done in this situation.

fixed

[LordEC911]

fixed

Yeah, you aren't going to see much better components than what was on the RV770, the R600 OEM is the only card I can think of off the top of my head that has been better.

[XSAlliN]

Except for VRM's, only cheap ones fail because of heat.

[570091D]

Great news if true but i'll say it again why would anyone upgrade? No new game is coming that warrants an upgrade. That's been the case for a while unfortunately.

we're not all running GTX295

i'm looking for a pair of cards with a large frame buffer to replace my GX2, the micro-studdering kills me in some games. so i'm waiting for the RV790, or the price drop on the 4870 1gb.

[onethreehill]

ATI Radeon HD4890 and Radeon HD4890 X2: Rumors from the Cebit

At the Cebit PC Games Hardware had the chance to talk to AMD's board partners about the Ati Radeon HD 4890 and a possible HD 4890 X2.

The board partners want to remain anonymous of course and thus we can't guarantee that the following details are one hundred percent correct.

Based on the information we received during our conversations it seems like the Ati Radeon HD 4890 (Single) will compete against the Geforce GTX 260 and not the GTX 285, since it seems like for the Ati Radeon HD 4890 only the frequencies of the GPU and the memory were increased. Accordingly the calculation units aren't changed. Basis for the increased frequencies is the 55 nm production process, which has been quite perfected by now. 850 to 900 MHz appear to be possible for the RV790 GPU; the RV770 of the HD 4870 is clocked to 750 MHz. As the GDDR5 memory of the HD 4890 (Single) is regarded, AMD wants to reach 3,900 million transactions/s - RV770 based cards reach 3,600 MT/s. Those numbers indicate an increase in gaming performance of 8 to 20 percent, depending on game and sequence.

PC Games Hardware also wanted to know the odds for and against a possible Ati Radeon HD 4890 X2. From a technical point of view such a card shouldn't be a problem, but it remains to be seen if AMD will really invest time into such a prestige object. A Radeon HD 4890 X2 might hit the markets only if it can noticeably beat the Geforce GTX 295. Probably AMD will leave it up to the board partners to build such a card or they are looking for exclusive partners like they did with the HD 4850 X2 which is available from Sapphire only.

The Radeon HD 4890 is supposed to hit the markets on April 6. This date, which has been brought up by VR-Zone initially, has been secretly confirmed by the board partners. But as usual such a date can easily be rescheduled ad hoc. We were also told that the cards will cost €230 to €240, although it is unclear if the cards will have 1 or 2 GiByte VRAM initially.................

http://www.pcgameshardware.com/aid,6...he-Cebit/News/

[drizzt5]

Good news!

4890x2 would beat the gtx 295 easy right? 8-20% improvement on the single card... so?

[LordEC911]

ATI Radeon HD4890 and Radeon HD4890 X2: Rumors from the Cebit

At the Cebit PC Games Hardware had the chance to talk to AMD's board partners about the Ati Radeon HD 4890 and a possible HD 4890 X2.


http://www.pcgameshardware.com/aid,6...he-Cebit/News/

Sandbagging...

[largon]

"HD4890" competes GTX260?
I thought HD4870 does that already.

I'd imagine the biggest gain from RV790 is lower power consumption, along with higher clocks - they have been making RV770 55GP with fixed variables now for over 9 months. In the mean time, AMD shorely has tweaked the arch and TSMC has been busy optimizing 55GP to make 55GT. It would be reasonable to expect higher performance and lower power from RV790 @ 55GT, not just one or the other.

[ILikeCosmosS]

hopefully the 5xxx series with new architecture will be out by the end of octuber and be on 40nm

i might just get the x2 verision for know when it releases and then sell it and get 5xxx series

[Macadamia]

Looks like ATI is going for 2 directions here.



RV740- unprecedented density on 40nm (it's scarily small)
RV790- unprecedented clock scaling on 55nm (if 1Ghz OCs are common and true)


RV870- combining both?

[Vinas]

Only 20% faster than the 285... no way that will compete head on. Price maybe, but not for sheer performance. But I bet it will overclock like crazy!

You're right. One would have to be a bone head to purchase the 285. It just doesn't make sense. This new card is the new king of the hill in terms of price performance ratio.

[initialised]

What is bugging me here is that most 4870s and x2s will do 1000-1100 (4-4.4GHz effective) so long as you don't take the core too high and this often yields better performance than a core overclock so why not use higher binned RAM as well as higher binned GPUs?

[LordEC911]

What is bugging me here is that most 4870s and x2s will do 1000-1100 (4-4.4GHz effective) so long as you don't take the core too high and this often yields better performance than a core overclock so why not use higher binned RAM as well as higher binned GPUs?

They might be, they put 5ghz chips on one of the laptop cards.

[Bo_Fox]

CeBIT 2009: An entirely new chip

We learned some bits and pieces on ATI's upcoming RV790 chip and we can now happily confirm that his is yet another 55nm chip from ATI.

The company didn’t want to postpone the introduction of the new card in performance segment and therefore did it in 55nm, while RV740 remains the first 40nm. RV740 just launched as a mobile chip, and we’ve seen it up and running, while the desktop part should arrive in the next month or two.

The new chip is a new architecture, but with some basic concepts taken from the RV770, that is why the chip will be significantly faster than anything based on the RV770. It is not just a speed bump and a better batch of RV770 based Radeon HD 4870 and 4850 chips, it is a newer and better chip.

It looks like this new chip will beat the GTX 260, and it could even get close to GTX285, but at a much more affordable price.

http://www.fudzilla.com/index.php?op...12439&Itemid=1

PcGamesHardware is probably wrong, as it is ALREADY wrong that the 4890 could only compete with the GTX 260, as the 4870 1GB already does that. I was always thinking that with 960 shaders and 48 TMU's, the 4890 would blow the GTX260 out of the water.

[Slovnaft]

gtx 285 at least
gnt

[cal_guy]

Let's just hope the heat and power consumption goes down a little with process optimization and better VRM components..

RV770 is already too power-hungry, compared to the similar-sized G92b.

The difference is small, 21 watts at idle and 5 watts at load.

http://techreport.com/articles.x/16504/10