ATI Radeon HD3400 & HD3600 séries

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AMD preps DirectX 10.1 'Radeon HD 3600' GPU pair

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AMD is expected to launch the successor to its ATI Radeon HD 2600 in January, and now the two new parts' speed details have emerged.

Graphics card maker sources cited by DigiTimes point two versions of the 'RV635' GPU one an XT model, the other a Pro. The former will be clocked at 800MHz, the latter at 600MHz. The chips support DirectX 10.1 - due to be released with Windows Vista Service Pack 1 early next year.

Both GPUs will connect to memory across a 128-bit bus, but while the Pro will appear on cards containing at least 512MB of GDDR 2 SDRam, XT-based cards will have 256MB of GDDR 3. As yet, memory clock speeds are not known.

The GPUs will be sampling shortly, the moles maintained.

However, it seems unlikely the two chips will come to market with Pro and XT monikers. As AMD demonstrated with the ATI Radeon HD 3800 series of GPUs, announced last week, it's effectively dropping such tags in favour of model numbers.

So while it might have launched the 3800 XT and 3800 Pro last week, in fact it announced the 3870 and the 3850 instead. Presumably, it will do the same with the ATI Radeon HD 3600, or whatever range the RV635 ships as.

The RV635 launch is expected to be accompanied by 'RV620', the successor to today's ATI Radeon HD 2400 family - HD 3400 series, anyone? ®

Source: Reg Hardware
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la vem estas substituir as 2400 e 2600 :P

(ahh afinal é so as 2600 ?!?),hmmm... um pouco fracas estas para substituir as 2600, a insistir em 128bits e ate ddr2(pro), mas...
 
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depois mais tarde sai as HD3400 (RV620) para substituir as 2400

The RV635 launch is expected to be accompanied by 'RV620', the successor to today's ATI Radeon HD 2400 family - HD 3400 series, anyone?
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R680 >> HD3870X2
RV670 >> HD3850 & HD3870
RV635 >> HD3600
RV620 >> HD3400


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Portanto vai substituir os 2600...mas é para permanecer ao mesmo preço certo? Estava a pensar em comprar o 3850, mas como eu é para jogar em baixa resolução se calhar espero até este 3600xt.
 
RV635 is Radeon HD 3600 Series
HKEPC has more details on the RV635 which will be officially known as Radeon HD 3600 series. RV635 architecture is similar to RV630 with 24 stream processors, 120 stream processing unit, 16 Texture Address Unit, 8 Texture Filter Unit, 4 ROP and 128-bit memory interface. However, RV635 PCB is different from RV630. There will be RV635 XT and RV635 PRO to be officially known as Radeon HD 3670 and HD 3850. HD 3670 will be clocked at 800MHz core and 1.6GHz memory and 3650 will be clocked at 600MHz core and 1GHz memory. The current revision of the RV635 GPU is A11. HD 3670 card is expected to sample in December and launch slated for January while HD 3650 is slated for end February.
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http://www.vr-zone.com/articles/RV635_is_Radeon_HD_3600_Series/5409.html
 
Com as HD3850 a aquele preço, essas parecem ser graficas a chegar para os 75-125€. Mas não percebo o porquê de insistir nos 128bits. Ou nos 120 SP. Podiam por 240, pelo menos. Ou 256bits e 120SP.
 
55nm RV620 die pic shows up

There’s not many detail yet, but we know that the RV620 is a 55nm product, supports PCIe 2.0, DirectX 10.1, UVD and software Crossfire(which doesn’t require a connector).

rv620core.jpg




http://www.expreview.com/news/hard/2007-11-22/1195711412d7025.html



xtremesystems
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More Radeon HD 3600 specs revealed

Yesterday we gave you a quickly time line and a few specifications of AMD's upcoming RV635 cards but since the info keeps on pouring from Taiwan we're back to complete the picture. Late January and February 2008 will see the release of two RV635 products, both positioned under the Radeon HD 3850s in terms of performance and price.

What the RV635 chip will bring is an update for the Radeon HD 2600 series and will power-up cards named HD 3670 and 3650. These two will be as cool as the 55nm process will let them be and have DirectX 10.1 support, PCI-Express 2.0, 120 Stream Processors and 128-bit memory interfaces.

The higher-end 3670 will have 256 MB of GDDR3 memory clocked at 1600 MHz and a core set to 800 MHz while the 3650 will have to do with GDDR2 memory at 1GHz ( 512MB ) and the GPU at 600 MHz. All that is for next year though, let's not jump over Christmas. We're waiting for that Veyron Santa.
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http://www.tcmagazine.com/comments.php?shownews=16924&catid=2
 
RV635 Confirmed; More Details Surface

When AMD released the HD 3800 series of graphics cards, most people were expecting some lower end parts for those who could not afford the $170-$230 it would cost to get an HD 3800 on Newegg. AMD's response to this is the RV635 and RV620. As stated previously there will be an RV635 XT and an RV635 PRO. The RV635 XT will be officially named the HD 3670, and the RV635 PRO will be officially named the HD 3650. Much like the current HD 2600 series, the HD 3600 series will have 24 stream processors, 120 stream processing units, 16 Texture Address Units, 8 Texture Filter Units, 4 ROPs and a 128-bit memory interface. The current revision, A11, shows that the HD 3670 will run at clocks of 800MHz core and 1.6GHz memory. The HD 3650 will have core/memory clocks of 600/1000MHz, respectively. You can expect these cards to be sampled in December, and released in January, or early February at the latest. The main thing separating the HD 3600 series from the HD 2600 series is CrossFire X support, as well as all the main perks of an HD 3800: Avivo HD, DirectX10.1, UVD, and ATI PowerPlay.

Source: VR-Zone

TechpowerUp
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viskonde disse:
para uma sucessora das 2600, as specs base podiam ser melhorzitas..
continuar a insisitir nos 128 bit ja enjoa..
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As HD 3800 são 256 bits. Como é que poderias ter 256 bits tb nas HD 3600?

Não fazia o mínimo sentido... ainda para mais isto serão gráficas sub 150 euros, porque por 150 euros fica a HD 3850.
 
DJ_PAPA disse:
As HD 3800 são 256 bits. Como é que poderias ter 256 bits tb nas HD 3600?

Não fazia o mínimo sentido... ainda para mais isto serão gráficas sub 150 euros, porque por 150 euros fica a HD 3850.
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Mas podiam apostar em 240 Stream Processing Unit's pelo menos. O desempenho destas novas HD3600 nao se irá distanciar muito do das HD2600, que é muito mau
 
S1nnless disse:
Mas podiam apostar em 240 Stream Processing Unit's pelo menos. O desempenho destas novas HD3600 nao se irá distanciar muito do das HD2600, que é muito mau
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Mas neste segmento de preço eles necessitam é de poupar em tudo quanto podem.
É uma excelente placa para Media Center que vem no seguimento das HD 2600.
E na altura que for lançada ja terás muito provavelmente HD 3850 em sub 150 euros.
É que se eles puxam muito nas specs da HD 3600 depois ninguém pega nas HD 3800. Por isso têm que fazer sentir que há ali uma diferença significativa entre as 2 gamas.

A boa noticia é que temos a ATI back to the game, o que é boa noticia para os consumidores.
Basta ver as super placas que as 8800GT e HD3870 são e pelo preço a que andam e pelo caminhar da carruagem isto não vai abrandar ja que quer a ATI, quer a Nvidia têm ja novas gamas preparadas em curtíssimos espaços de tempo.
 
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HKEPC Claims Honor of First HD 3600 Series Picture

Nothing confirms a graphics card's existence quite like pictures. HKEPC, along with some confirmed facts as to what we can expect to see from and when we can expect to see an HD 3600, published the first HD 3600 picture. Here are the confirmed facts:
  • The RV635 will be a 55nm part.
  • The RV635 will run DirectX10.1, have Shader Model 4.1, and be fully compatible with PCI Express 2.0.
  • The RV635 will have 24 Stream Processors, 120 Stream Processing Units (ALU), 16 Texture Address Units, eight Texture Filter Units and four ROPs.
  • The RV635 will be paired with an unknown quantity of 128-bit GDDR2/3/4 VRAM.
  • The RV635 will be split into two groups, the XT and PRO. The RV635XT will be dubbed the HD 3670, and will be clocked at 800/1600 core/memory, respectively. The RV635PRO will be dubbed the HD3650, and clocked at 650/1000 core/memory, respectively.
  • The RV635 will begin mass-production in mid-December, and begin shipping in January.


3600.jpg


Source: Google-Translated HKEPC


TechPowerUp
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Tiny RV620 and G98 die sizes leak out

Expreview has got their hands on die shots from NVIDIA and AMD's upcoming low-end chips, and while that isn't particularly interesting in itself, they managed to break tradition and leak the chips' dimensions at the same time.

[This piece is the second in a streak of experimental content which uses lists of facts and analysis rather than prose. We believe this should be faster to both read and write, while delivering a clearer message and being easier to follow. So let's see how this goes...]

Data

* AMD's RV620 is 7.0x9.5mm (~67mm²) versus RV610's 7.5x10.5mm (~79mm²). That's ~15% smaller.
* RV620 is expected to be a 55nm shrink of the RV610 (65nm), with added DisplayPort capabilities.
* NVIDIA's G98 is 9.0x9.5mm (~86mm²) versus G86's 10.0x10.5mm (~127mm²). That's ~30% smaller.
* G98 is expected to be a 65nm shrink of the G86 (80nm), with added DisplayPort capabilities but no 128-bit bus support.
* The RV620 is expected to be part of the HD3000 Series, while the G98 would remain branded as GeForce 8400GS.

Process Scaling Analysis

* In practice, Moore's Law doesn't result in twice the transistors per mm² for each full-node migration (i.e. 90nm to 65nm). Scaling for logic-only designs is likely to be 40% or less, and real chips with analogue and I/O will scale even worse.
* TSMC's 55nm process is a 10% linear shrink of 65nm in each dimension, or 19% overall. Interestingly, analogue and I/O are claimed to also scale by that amount.
* TSMC's half-nodes, such as 55nm and 80nm, tend not to really do half the scaling; going from 80nm to 65nm should thus result in slightly better scaling than 65nm to 55nm for digital logic.
* 80nm was also a 19% shrink, but it did not affect analogue and I/O. This means the scaling wasn't as good as 55nm's in practice. Similarly, 80nm to 65nm possibly didn't shrink analogue as much (if at all).

Chip Scaling Analysis

* Smaller chips, such as RV620 and G98, have a higher percentage of I/O and analogue, which makes 55nm an especially attractive half-node.
* The two are very hard to compare, however, as G98 loses 4 ROPs and half of its memory bus width compared to G86. On the other hand, analogue and I/O scaling is likely better for RV620.
* Overall, digital logic still dominates, so NVIDIA would likely have obtained slightly better scaling even if G98 was a straight shrink of G86. At worst, it would have been similar.

Cost Analysis

* Just like RV610, it is unlikely for RV620 to have a cut-down SKU. Shader core redundancy is probably similar to that in R600's (17 ALUs for every group of 16). It is unknown whether there is fine redundancy for anything else.
* It has also been rumoured that there would be a G98 SKU with only 4 TMUs, 8 SPs and 2 ROPs. It is unknown whether that will be the case, but a SKU with at least some coarse redundancy does seem likely.
* Both IHVs are benefiting from the extremely low DDR2 prices and their indirect effect on GDDR3/GDDR4 pricing.
* Assuming no IPC improvements from either side, performance with 800MHz DDR2 should roughly be a wash.

Overall, AMD has a clear cost advantage with the RV620: wafer prices for 55nm should be very close or even identical to those for 65nm, and yields aren't as much of a concern for such an incredibly small chip. The gap isn't as big as it was with RV610 and G86, both in relative and absolute terms, but it remains significant.

Given RV620's support for DX10.1 and its lower cost, it does seem like a splendid chip for the OEM market. We look forward to comparing G98 and RV620's success and capabilities in the coming months.
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http://www.beyond3d.com/content/news/529
 
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