vertex_shader
Banned
I not except for may launch any 256bit card in 200-230$ range, my quess is late august, BTS.
The Official RV630/RV610 Rumours & Speculation Thread
- Thread starter Arun
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I not except for may launch any 256bit card in 200-230$ range, my quess is late august, BTS.
Jawed
Legend
So, in terms of unit counts (die area) G84 is 1/4 of G80 (SPs and TMUs), but with 1/2 the texture addressing and 1/3 ROP/MCs. What are the chances that RV630 is 1/4 of R600? I'd say slim, it's more likely that RV610 is 1/4.
It seems likely that RV630 is half of R600 in terms of unit counts.
I think that might explain the rumoured relatively high power consumption of HD2600XT, ~50W more than 8800GTS.
Jawed
It seems likely that RV630 is half of R600 in terms of unit counts.
I think that might explain the rumoured relatively high power consumption of HD2600XT, ~50W more than 8800GTS.
Jawed
Sound_Card
Regular
Can we try to compare die sizes of G84 and RV630?
RV630 is to the most right of the chips.
Maybe we can tell by die size which chip has a bigger engine under the hood.
RV630 is to the most right of the chips.
Maybe we can tell by die size which chip has a bigger engine under the hood.
Sound_Card
Regular
And who say's this?
Sound_Card
Regular
Correct me if I'm wrong. But looking at the surface area of G84 and RV630, it seems RV630 is ever so slightly bigger. Then you must take into account of RV630 being 65nm. Unless I'm off, their has to be something packed in that die.
Jawed
Legend
Concensus guesses put RV630 at 160mm2, as far as I can tell. That's 65nm.
G84 is 169mm2 on 80nm.
If RV630 was implemented in 80nm, pure scaling (which to be honest I think is dodgy) would make it 240mm2. That's about 57% of the size of R600's 423mm2 (is that the right figure?). And, way bigger than G84 (some 42%).
But RV630's memory bus is "known" to be 1/4 of R600's, 128 v 512-bit. So that's a reduction in die space given to MCs. Which means either more space for other gubbins, or that 65nm scaling is considerably lower than the ratio of the processes (65nm:80nm).
Jawed
G84 is 169mm2 on 80nm.
If RV630 was implemented in 80nm, pure scaling (which to be honest I think is dodgy) would make it 240mm2. That's about 57% of the size of R600's 423mm2 (is that the right figure?). And, way bigger than G84 (some 42%).
But RV630's memory bus is "known" to be 1/4 of R600's, 128 v 512-bit. So that's a reduction in die space given to MCs. Which means either more space for other gubbins, or that 65nm scaling is considerably lower than the ratio of the processes (65nm:80nm).
Jawed
Jawed
Legend
What's the smallest that RV610 could be?:
So, ahem, based on the smallest RV610, RV630 would seem to be, at least:
- 16 ALUs (vec5 MAD), 4:1 ratio ALU:TMU
- 4 TMUs
- 4 ROPs
- 2 MCs (32-bit) = 64-bit memory
So, ahem, based on the smallest RV610, RV630 would seem to be, at least:
- 32 ALUs (vec5 MAD), 4:1 ratio ALU:TMU
- 8 TMUs
- 8 ROPs
- 4 MCs (32-bit) = 128-bit memory
Do we have die size data for any 65nm GPU that has a functionally identical counterpart at an older process? This would give us a percentage size reduction baseline.
EDIT: Well, the closest I was able to find was a quip at Fudzy about G78, which he says is a ~60mm^2 65nm G72, which is of no huge help since G72 is a 90 nm chip. Still, if we assume it's exactly 60 mm^2, it would give us a 22% die size reduction Vs 28% theoretical one.
EDIT: Well, the closest I was able to find was a quip at Fudzy about G78, which he says is a ~60mm^2 65nm G72, which is of no huge help since G72 is a 90 nm chip. Still, if we assume it's exactly 60 mm^2, it would give us a 22% die size reduction Vs 28% theoretical one.
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Sound_Card
Regular
vertex_shader
Banned
Its looks like a 256bit card.... i smell some surprise in amd mainstream.
This card was on Cebit too, but no one write about what card is this, many user think its a R600XL/GT/GTO/PRO.
Sound_Card
Regular
If thats the case, I smell two HD 2600XT's in my rig.
I know - with HSF housing made of BLACK! TRANSLUCENT! PLASTIC! anyone would be a fool to think otherwise.
Sound_Card
Regular
It's not exactly normal to see a dual slot cooler come stock on a mainstream card. That card has to be packing something under that hood.
Heat?
Sound_Card
Regular
So they just went with a two slot cooler for the fun of it?
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