ATI Radeon HD 4000 Series discussion

[Hornet331]

Proof that R700 is the same as 3870x2?

look back a few pages and look very hard at the supposed R700 reference cooler.

[zerazax]

Again, he directed that quote at the claim that R700 is just CF on-board, like the 3870X2. And again, there's no proof it is or isn't.

A bridge chip is a given anyways if two discrete GPUs are going to communicate - how they communicate, however, is a different question.

[AliG]

exactly what I'm talking about, we have no idea what this new bridge chip will do to how the chips communicate

[everlast247]

actually the R700 is shorter than the r680 (pic in this thread), has a better cooler and a new bridge chip (PCIe 2.0).

maybe this chip deals with stuttering issues (i recently had a chance to test a hd3870x2 because a friend of mime) because from my experience the normal 3870 CF has much fewer microstutters which appear less often (every 2-10 mins on my rig) and don'T disturb as much as the 3870X2 stutters which are there more often

maybe the X2 really had some sync problems because of the bridge chip, i hope that the 4870X2 deals with the stutters and shuts them out completely, but i don't think that this is going to happen

I had micro stutters with the stock settings too. After a lot of playing around with CCC I found raising the refresh rate from default 60Hz to 75Hz stopped it. Give that a go and I hope it helps.

[biohead]

sure we're talking about the same thing here? "micro-stuttering" is always apparent because of AFR, there is no in between. results differ from game to game but it isn't just some temporary thing--if you're experiencing stuttering during game play, it's caused by something else.
everlast, i think you're confusing micro-stuttering with input lag (responsiveness of your LCD).

[bill_d]

some poeple see it and some don't, at 2560x1600 with 3870 cf i don't
maybe just old eyes

[STaRGaZeR]

It depends of the game. With my 3870s I experienced micro-stuttering in almost every game, but a few ones were smooth as silk

[AliG]

I wonder if that has to do with the game or the drivers

[cadaveca]

Both. Depends on the app. many issues at paly in this situation. hopefully this gen will fix the problem.

[OBR]

Launch was postponed to 26.6?

[LordEC911]

Launch was postponed to 26.6?

I have been hearing June 23...
http://www.tgdaily.com/content/view/37795/135/

[drjunk]

I dont understand. Fudzilla report that the hd4850 runs 78 degrees at 0% activity. I thought hd4850 used around 10w when idle.

http://www.fudzilla.com/index.php?op...=7701&Itemid=1

[LordEC911]

I dont understand. Fudzilla report that the hd4850 runs 78 degrees at 0% activity. I thought hd4850 used around 10w when idle.

http://www.fudzilla.com/index.php?op...=7701&Itemid=1

If they were overclocking it, I doubt they kept the default power settings enabled.

[SimBy]

I dont understand. Fudzilla report that the hd4850 runs 78 degrees at 0% activity. I thought hd4850 used around 10w when idle.

http://www.fudzilla.com/index.php?op...=7701&Itemid=1

You actually believe anything Fuad says?! The guy is a f* joke.

[drjunk]

http://www.vr-zone.com/articles/Rade...sted/5829.html

625mhz@78 degrees

[everlast247]

[QUOTE=biohead;3037610]sure we're talking about the same thing here? "micro-stuttering" is always apparent because of AFR, there is no in between. results differ from game to game but it isn't just some temporary thing--if you're experiencing stuttering during game play, it's caused by something else.
everlast, i think you're confusing micro-stuttering with input lag (responsiveness of your LCD).[/QUOTE]


Aahhh possible. I experienced a noticeable stutter every two minutes or so that was unbearable. I tried the usual suspects like drivers etc and as I stated earlier, simply increasing the refresh rate from 60 to 75Hz made it smooth as duck poo.

If you are experiencing even smaller stutters may I suggest consuming 2 to 3 beers when playing games, you wont notice them with beer goggles on.

[Kingcarcas]

I would really like to see 3DMark06 scores for these puppies

[w0mbat]

Theres no delay so far.

[Apoc@]

AMD HD 4850 – RV770 GPU die shot



For more pics:
http://www.bit-tech.net/news/2008/06...gpu-die-shot/1

[ownage]

Hmm, nice, that should be easy to cool!

[annihilat0r]

Holy that GPU is huge.

[SimBy]

Holy that GPU is huge.

It prolly just looks huge cos of the zoom.

[mascaras]

http://www.vr-zone.com/articles/Rade...sted/5829.html

625mhz@78 degrees

probably they take the Screenshot after a 3dmark vantage Run or other benchmark , like the HD3800 series the temp take a while to go down (idle) after running 3D ..........



regards

[largon]

It should be a bit over 250mm^2.
RV670 vs RV770 in-scale:

[Monkeywoman]

"Yep, that's AMD's forthcoming mid-range GPU, the Radeon HD 4850. It's a single-slot design, and it doesn't look all too dissimilar from the current 3800-series. Our sources state that AMD aren't allowing its partners to adjust the reference design at launch. If indeed that is the case, every Radeon HD 4850 will initially look like the above, with the various partner-provided derivatives arriving later on.

The card provides 512MiB of GDDR3 memory and features dual DVI-I outputs. Unfortunately, GIGABYTE weren't willing to cough-up any further details, despite showing the card. Nonetheless, there's support for CrossFire X and our favourite feature is undoubtedly the sticker that says "FAST"."

for some reason the back side of the pcb looks more complex then the R600 cards, like there is "more" on the card.

source; hexus.net