ATI Radeon HD 4000 Series discussion

[Macadamia]

I'm hoping that the added TMUs will help the sub-par AA performance that the 2900 and 3800 series suffered from.

Any word on that yet? I'm an admitted AA whore.

TMUs help AF.
AA is influenced by fillrate, but in ATI's case it's mostly just sample rate.

Not that it matters much though- 8x Box AA or 2x Narrow/Wide Tent AA are extremely good, and Edge Detect 4x can match 16xQ or even more.

Currently you need a better raw speed for those modes, and the 4ks are gonna bring that for a start.

[w0mbat]

source: http://www.ati-forum.de/allgemein/ne...of-the-hd4850/

[BenchZowner]

TMUs help AF.

Not really.
It's the TFUs.
Faster/more TMUs can accelerate it in some cases ( lets say that the cards TF was bottlenecked by the TMUs for example ).

[whocaresbg]

AMD ATI Radeon HD 4850 pictured :

http://www.bit-tech.net/news/2008/05...850-pictured/1

[STaRGaZeR]

AMD ATI Radeon HD 4850 pictured :

http://www.bit-tech.net/news/2008/05...850-pictured/1

Looks like that early photo of the PCB with the small silver square was not fake after all.

[eric66]

Looks like that early photo of the PCB with the small silver square was not fake after all.

haha yes so ironic we had it monhts ago

[zerazax]

I'm hoping that the added TMUs will help the sub-par AA performance that the 2900 and 3800 series suffered from.

Any word on that yet? I'm an admitted AA whore.

Shaders did AA for thee R600 architecture - but supposedly they doulbled the clocks for AA operations per second anyways

It certainly looks like the 4850s are ready to roll

[RPGWiZaRD]

AMD ATI Radeon HD 4850 pictured :

http://www.bit-tech.net/news/2008/05...850-pictured/1

Beautiful card imo. Hopefully these are gonna perform at least like 8800GTS 512MB or slightly better I'd hope.

[fng77]

AMD ATI Radeon HD 4850 pictured :

http://www.bit-tech.net/news/2008/05...850-pictured/1

Nice work finding it! Looks like a nice card. Í´m getting one for sure.

[ANP !!!]

AMD ATI Radeon HD 4850 pictured :

http://www.bit-tech.net/news/2008/05...850-pictured/1

Looks so nice, Cant wait for 4870 and 4870X2 pics and benches, I am needing one badly.

[OBR]

Nice work finding it! Looks like a nice card. Í´m getting one for sure.

Hmm, nice card? It looks like HD3850 ...

[AliG]

Hmm, nice card? It looks like HD3850 ...

That's exactly the point, it doesn't consume much power at all considering how much power is stored in it, either way based on how much you support nvidia I don't think your opinion will hold much water to anyone planning on buying an ati card

[Origin_Unknown]

Hmm, nice card? It looks like HD3850 ...

every socket 775 chip looks the same.... doesnt mean they all perform the same.

[Mungri]

I want some Zerotherm models please!!!

I want them now!

[fng77]

Hmm, nice card? It looks like HD3850 ...

Thats exacly why I think it looks nice

[fng77]

Looks so nice, Cant wait for 4870 and 4870X2 pics and benches, I am needing one badly.

The 4870 is going to look something like this (old news. I know =)

[Nuker_]

AMD ATI Radeon HD 4850 pictured :

http://www.bit-tech.net/news/2008/05...850-pictured/1

They had to write "FAST!" on the back of the card, does this imply a low performing card/failure?

[fng77]

I want one of these. Right now. What is the official release date now? At gpureview.com it still says 2008-05-31

[fng77]

Just found an update here:

http://www.tomshardware.com/news/amd...deon,5514.html

The shipping to retailers has started according to toms


"We were told that AMD/ATI will decide on final pricing during the Computex tradeshow (which is scheduled to open on Monday) in order to have all the puzzle pieces for a June 18 in place. It certainly does not look like a paper launch at this time and the June 18 is an as-of-now date, since the company could revise is launch schedule to avoid a launch right on the heels of Nvidia’s new high-end parts"

[mascaras]

yep

AMD Starts Shipping ATI Radeon HD 4850 Video Cards

The ATI Radeon HD 4850 cards are reportedly already shipping to OEM partners and retailers. According to TG Daily everything is going as planned and AMD/ATI is aiming for a sizable launch of the new product generation, with Radeon 4850 512MB boards leading the charge. The final prices for all Radeon HD 4 series cards will be officially declared during the Computex 2008 tradeshow which will open doors on Monday. Higher-end Radeon 4870 cards with 512MB of onboard GDDR5 memory are expected to ship in volume sometime this summer, with flagship Radeon HD 4870 X2 to follow soon after that.



http://www.techpowerup.com/61735/AMD...deo_Cards.html

[Miwo]

ugh 512MB ddr5 on the 4870
thought we were gonna get 1GB cards?

[bowman]

ugh 512MB ddr5 on the 4870
thought we were gonna get 1GB cards?

Yes - they are shipping later, GDDR5 takes its sweet time compared to GDDR3 which is already in place.

[003]

I'm hoping that the added TMUs will help the sub-par AA performance that the 2900 and 3800 series suffered from.

Any word on that yet? I'm an admitted AA whore.

ATI does AA in the SPs, which have been increased to 480 on the HD4000 series for the 4870 variants, and they have also unlocked the shader speed from the core, so it is more like nvidia cards in that respect now, and hopefully, there will be a way to overclock the shader speeds, which will come at 1.05GHz, next to the 850MHz core.

[LordEC911]

ATI does AA in the SPs, which have been increased to 480 on the HD4000 series for the 4870 variants, and they have also unlocked the shader speed from the core, so it is more like nvidia cards in that respect now, and hopefully, there will be a way to overclock the shader speeds, which will come at 1.05GHz, next to the 850MHz core.

The shader domain is still a question right now, it would be strange for AMD to do that. Also CJ and Wombat have stated that the clocks are not correct either.

ugh 512MB ddr5 on the 4870
thought we were gonna get 1GB cards?

We will eventually. AMD/ATi reference is 512mb cards but AIBs will be doing 1Gb models once GDDR5 is a bit more plentiful, possibly one of the reasons that they pushed R700 back.

[003]

The shader domain is still a question right now, it would be strange for AMD to do that. Also CJ and Wombat have stated that the clocks are not correct either.

I'm confused. Are you saying that the 850MHz core speed and 1050MHz shader shader speed are incorrect? And are you also implying that the shader speed may still be the same as and tied to the core speed?

That would be a real shame.