RV770 has 800 SPs, breaks 1.2TFLOPS

[flashstar]

Tkpenalty, the G80-g92 are in fact inferior to the R600. The ring bus is actually quite amazing. I remember reading several articles on how it works and it's definitely a step ahead of Nvidia's design. Unfortunately, ATI was rushed to finish the R600 and consequently had to release an inferior product. The core design is certainly not inferior to Nvidia's current generation.

I wouldn't be surprised if the R770 actually matches the GTX-280 in raw performance. Once ATI fixes all of the corners that they cut with the R600 and adds more raw power in order to develop the R770, you will be looking at a much larger boost in performance that Nvidia could ever hope to squeeze out of their design.

Remember folks that Nvidia has pretty much stayed with the same core design since the Nv40!

 

[Hayder_Master]

great

 

[yogurt_21]

800 or 480 doesn't matter considering the extra 320sp's are al simple.

it has been confirmed by the wiz however, that there are 160 complex shaders on the core. which is the only number I care about being that the 2900's/3870's only had 64 complex shaders.

so either way this thing is definetly going to perform better then it's predecessors.

 

[From_Nowhere]

I thought "Stream Processing Units," on ATI cards meant that number divided by 5 because their stream processors are capable of 5 operations per clock. So 800 Stream Processing Units (160 Stream Processors) seems reasonable. Anyway, the 4800 series seems to be a very good improvement over the 3800 series.

 

[P4-630]

And when it's out, it would have 500 SP's and everyone would be wrong hehe

Was it not "800"+ million transistors and 480 stream processors?


Specifications: 480 stream processors, 800+ million transistors

Let’s have a look at the general specifications of the Radeon 4800 series, which is based on the RV770 graphics processor. The new GPU has 480 stream processors or shader units (96+384), 32 Texture units (up from 16), 16 ROP (same as 2900/3800), a 256-bit memory controller and native GDDR3/4/5 support (expect GDDR3 and GDDR5 memory versions of RV770 cards).

The transistor count has jumped from 666 million in the RV670 to more than 800 million transistors in the RV770.

The manufacturing process has been carried over: TSMC is producing the GPUs in 55 nm (the process itself is called 55GC).

The Radeon 3800 series had a serious flaw called texture low fill-rate, which was addressed by ATI with an increased number of TMUs (Texture Memory Unit) from 16 to 32. The specifications indicate that 16 TMUs can address 80 textures on the fly, which means that 32 units should be able to fetch 160 in the RV770: This should allow the new GPU to catch up with Nvidia’s G92 design. However, the G92 has 64 TMUs that were enabled gradually (some SKUs shipped with 56), resulting in a fill-rate performance that beat the original 8800GTX and Ultra models.

ATI’s RV770 will be rated at a fill rate of 20.8-27.2 GTexel/s (excluding X2 version), which is on the lower end of the GeForce 9 series (9600 GT: 20.8; 9800 GTX: 43.2 9800 GX2: 76.8).

New for the 4800 series is AMD’s decision to split the clock of the GPU and shaders, following a move that Nvidia made with the GeForce 8800: Back then, the shaders were clocked at 1.35 GHz, while the rest of the chip ticked at 575 MHz.


http://www.tgdaily.com/content/view/37093/135/

 

[Hayder_Master]

anyone have more details of hd 4850 and 4870,4870 x2 , evrything

 

[HydroIT]

I don't know, I think it looks reasonable, especially considering how serious AMD is with marketing it as "one teraflop" etc...

 

[P4-630]

Sapphire Radeon HD 4850 512MB GDDR3
21132-00-20R

€ 184,00

bus 256-bit
memory 2,0GHz GDDR3
ATI RV770
HDCP compatible
HDMI out
Interface PCI Express 2.0 x16
Single slot cooling
Shader speed 850Mhz
Shaders 480
clock speed 625Mhz
TV-Out S-Video

http://www.digicom-it.be/product/19170/Sapphire_Radeon_HD_4850_512MB_21132-00-20R.html

 

[HydroIT]

Erm..

http://fxvideocards.com/VisionTek-Radeon-HD-4850-p-16381.html

Stream Processors 800
Core Clock 625 MHz
Memory Clock 1000 MHz
Memory Interface 256 bit
Memory Type 512MB GDDR3
Texture Fillrate (billion/sec) 24.0
Fabrication Process 55nm
Bus Interface PCIe 2.0 x16

 

[P4-630]

Erm..

http://fxvideocards.com/VisionTek-Radeon-HD-4850-p-16381.html

Stream Processors 800
Core Clock 625 MHz
Memory Clock 1000 MHz
Memory Interface 256 bit
Memory Type 512MB GDDR3
Texture Fillrate (billion/sec) 24.0
Fabrication Process 55nm
Bus Interface PCIe 2.0 x16

Do we believe a "Jimmyz from a small town in Indiana"
http://fxvideocards.com/PCI-Express-2.0-PCI-E-2.0-p-1-c-275.html
VisionTek Radeon HD 4850 with no specific product code specified and......Out of Stock......
http://fxvideocards.com/VisionTek-Radeon-HD-4850-p-16381.html

or

Sapphire Radeon HD 4850 512MB
Productcode 21132-00-20R

€ 184,00
Pre-order

http://www.digicom-it.be/product/19170/Sapphire_Radeon_HD_4850_512MB_21132-00-20R.html

 

[HydroIT]

Um, I believe little "Jimmyz", since XS got a sample card from fxvideocards

 

[MrHydes]

Um, I believe little "Jimmyz", since XS got a sample card from fxvideocards

yes

Today we will be looking at the Visiontek HD 4850 512MB Video card.

First off I would like to thank FXvideocards for supplying me with a review unit, as you can imagine it hasn't been easy, but they never let that stop them before.:up:

The card: Radeon HD 4850

The site: http://fxvideocards.com/

Reseller ratings (platinum): http://www.resellerratings.com/store/FxVideoCards


As you probably already know from the news and leaks around the web, this card is code named "Makedon " presumably after Terry Makedon who heads up the Catalyst driver team. Yhis is a good omen for having driver support, as it would be a bad move to have a card named for you and have the drivers not work well. So far I have no way of confirming the shader count or rops, tmu's etc. so that info will be updated as it becomes avaiable.

First off some pictures:

The VisionTek box, My favorite part is on the back where it says Lifetime Warranty!!!:up: They have really stepped up where most board partners adopted the 1 YR policy of ATI.

What's inside the box, VisionTek doesn't bundle any games or Benchmark discs nor is there any DVD trial offers like other board partners, What you do get is a clean reference design card without the often tacky stickers of the other makers. which I find to be a better look. they do however include all the connectors you would need like the DVI yo HDMI adapter, as well as a component out cable. and the usual DVI to VGA adapter. Also included is the crossfirex interconnect bridge. They also Include a PCI-E power adapter plug for the cards six pin power plug.

Now onto the card itself. If you saw the HD3850 reference design this should look familiar to you, it is essentially the same card with a slightly different cooler,( and of course a truckload more power). It comes with UVD-2 the second generation on-chip video decoder.

On to the back, again pretty familiar stuff here nothing earthshaking, It does BTW use the same mounting pattern as the reference 3850 so most coolers should fit fine

Now onto the pron...lol here is the obligatory Die shot. The actually quite large chip is once again surrounded by a shield but this one looks to pose no issues with most coolers I have seen, the possible exceptions being the full cover waterblocks, but as the layout is very similar they may possible fit with some slight modification or with little contact on some ramchips.

The main difference between the 3850 and 4850 visually is this vent which exits the side. to allow better airflow. instead of just bouncing it off of the i/o plate.

The sticker of course, and this is also the area that hide the volt mod...more on that in the overclocking section:up:

special thanks to jimmyz from XS

home reviews as started

 

[TooFast]

http://www.pcvonline.com/productDetails.aspx?id=7244


http://www.pcvonline.com/productDetails.aspx?id=7245

 

[Hayder_Master]

thanx guys good work, what about 4870 and 4870x2

 

[Darknova]

Do we believe a "Jimmyz from a small town in Indiana"
http://fxvideocards.com/PCI-Express-2.0-PCI-E-2.0-p-1-c-275.html
VisionTek Radeon HD 4850 with no specific product code specified and......Out of Stock......
http://fxvideocards.com/VisionTek-Radeon-HD-4850-p-16381.html

or

Sapphire Radeon HD 4850 512MB
Productcode 21132-00-20R

€ 184,00
Pre-order

http://www.digicom-it.be/product/19170/Sapphire_Radeon_HD_4850_512MB_21132-00-20R.html

Personally, I'd believe the place Jimmyz got the card from

 

[erocker]

800sp's confirmed as far as I'm concerned.

 

[imperialreign]

800sp's confirmed as far as I'm concerned.

interesting!

no shader clocks, though - I thought they were supposed to be clocked independantly?

 

[erocker]

Yeah, I wonder what's up with that? Perhaps, for now they are just clocked faster but still locked? Hmmm....

 

[Hayder_Master]

i need to know how much rop in 4850 and 4870 please

 

[Darknova]

800sp's confirmed as far as I'm concerned.

Well there we go, hey, maybe cavalry1980 would like to comment? seen as you were adamant that it's physically impossible to get 800 shaders in there?

 

[btarunr]

800sp's confirmed as far as I'm concerned.

Funny, isn't that a rather low texture fill-rate? GPU-Z shows it's GDDR3, has to be HD4850, but the pic shows Qimonda banks....HD4870, GDDR5.

 

[From_Nowhere]

Twice the texture fillrate of a 3850, the pixel fillrate I don't know about.

 

[calvary1980]

http://www.overclock.net/video-game-news/343051-hardspell-4850-gpu-z-3dmark-vantage.html

4 days ago, from hardspell. 480SP

- Christine

 

[Darknova]

http://www.overclock.net/video-game-news/343051-hardspell-4850-gpu-z-3dmark-vantage.html

4 days ago, from hardspell. 480SP

- Christine

And yet it's an older version of GPU-Z.

 

[calvary1980]

http://img101.imageshack.us/img101/3754/vantagextremestock2808tn4.jpg

lol, looks like jimmy went back and corrected it. pretty sure this said 800 unified yesterday now it says 480 unified. oh and look it's same version of gpu-z and memory error as the one from overclock.net

- Christine