AMD: R8xx Speculation

[mao5]

Oh dear, now the asians listen to Charlie!?!



Just like there's a hole between RV770 and RV730?

buddy, my source told me you can see "Radeon 7 Series" on the computer screen when you power on the Evergreen machine, ok? not the signature pic from sb else, thx.

 

[mao5]

neliz, you can ask charlie for below leaking info, I don't translate them

 

[w0mbat]

Oh dear, now the asians listen to Charlie!?!

And this puts me back in the frontline. Danm i hate it

 

[digitalwanderer]

I don't mind the name "Radeon 7 Series", it's the dumb "7" in the fake logo that was posted that I didn't like.

Well that and all the tree names. Is it supposed to be a whole "going green" thing? I just don't get it. Were the marketing guys sitting around brainstorming about what best represents the new mighty awesome gaming power and excitement of their new line-up, and they came up with TREES?

I don't get it.

 

[Pressure]

Were the marketing guys sitting around brainstorming about what best represents the new mighty awesome gaming power and excitement of their new line-up, and they came up with TREES?

I don't get it.

It's just internal code names...

 

[TimothyFarrar]

Even without tessellation this is a basic problem. The same pixel might appear on several triangles that are in flight at the same time. I honestly don't know how developers are going to make much use of pixel read/write when the render target is constantly changing.

That is exactly the point I was attempting to make!

I don't understand what it is about the tessellation case that creates a problem here. Tessellation is followed by setup then rasterisation. Tessellation is transparent as far as a fragment is concerned.

Right, I wasn't implying that tessellation creates a new problem. It will likely be more frequent however...

 

[no-X]

I don't get it.

Did you forget about Redwood? There is still hope, it might be red!

 

[fellix]

From XS forums (link):

Radeon "7" Family (Evergreen) is 6 parts:
Trillian = "R800" + either multiple montior or 3-way GPU
Hemlock = "R800" Dual GPU
Cypress = "RV870" Single GPU
Juniper = "RV840"
Redwood = "RV830"
Cedar = "RV810"
Press date: Sept 10th, 2009 Event loc. San Fran, USA?
Hard release: Sept 24th. --> mid Nov. 2009
Price range: $500 (high-end) --> $50 (low-end Cedar)

Cypress (rv870) single gpu "HD5870" is:
HD2900XT PCB size
40nm
353mm^2 die size
19mm x 19mm at cost of $34 per die
2x 6pin PCI_E power connectors
DX11
1600SP
256bit bus
80TMU
32ROP
1024/2048mb mem configs
SIMD : 20
Shader Clock : 850 ???
Memory Clock : 1200 ???
Bandwidth : 153Gbps ???
~$350 MSRP
3dmark vantage performance:
Cypress ~P16xxx - P17xxx - P18xxx
aka ~HD4870X2 performance level
potentially an ~30% performance improvement in the same power profile vs. rv770

Hemlock (R800) dual gpu "HD5870x2" is:
larger than 4870x2 single PCB
40nm 353mm^2 die x 2
19mm x 19mm at cost of $34 per die
1 6pin + 1 8pin PCI_E power connectors
DX11
3200SP
256bit bus x 2
80TMU x 2
32ROP x 2
1024/2048mb x 2 mem configs ???
~$500 MSRP
3dmark vantage performance:
(2x Cypress) theoretical P34xxx ???

Juniper/Redwood HD5850, HD5830, HD5770?
Partial shroud HSF design
40nm
181mm^2 die size
14mm x 14mm die
1 6pin PCI_E power connector
DX11
800SP on Redwood
640SP on Juniper
128bit bus
40TMU
16ROP
512/1024mb mem configs???
~$199/$149 MSRP
3dmark vantage performance:
Juniper XT ~P95xx
Redwood ~P46xx
About the speed of a HD4870 & HD3870

 

[TimothyFarrar]

The LDS "exchange" mechanism is atomic (i.e. write/read are indivisible), because a clause encapsulates the LDS instructions. But ATI cannot currently support an atomic: "import data into registers, execute ALU cycles, export data from registers" because that's 3 clauses - ALU instructions cannot operate on non-register memory, except for fetching from constant buffers.

BTW, thanks for the ATI details!

 

[Kaotik]

From XS forums (link):

I'm 99% sure that they're wrong - not necessarily spec-wise, but naming wise - as in, I'm quite positive on "HD5870" and "HD5850", or whatever the names will be, share the same chip

Not to mention that first calling it "Radeon 7 series" and then the old names doesn't sound right at all, I mean would we be buying "Radeon 7 HD 5870"'s next?

 

[w0mbat]

Either one, the HD5000 or the 7 is wrong. Maybe both. Who knows?

 

[neliz]

I'm 99% sure that they're wrong - not necessarily spec-wise, but naming wise - as in, I'm quite positive on "HD5870" and "HD5850", or whatever the names will be, share the same chip

Not to mention that first calling it "Radeon 7 series" and then the old names doesn't sound right at all, I mean would we be buying "Radeon 7 HD 5870"'s next?

That post just sums up everything WE discussed and Charlie printed in the last four weeks.

B....S....

(and they still didn't put all the things together properly)

 

[mao5]

Radeon 7 880
Radeon 7 870
Radeon 7 850
Radeon 7 830
-------------
if it's wrong, don't blame on me

 

[fellix]

That should be "Radeon II Series" -- to bound more properly with the Phenom II marketing line.

 

[Jawed]

Plenty more like that in http://developer.amd.com/gpu_assets/R700-Family_Instruction_Set_Architecture.pdf

Which reminds me:

http://forum.beyond3d.com/showpost.php?p=1292190&postcount=613

srv_struct_load   srv_raw_load      dcl_struct_srv    dcl_raw_srv      append_buf_consume      append_buf_alloc

There's also atomics for UAV:

uav_read_cmp_xchg uav_read_xchg     uav_read_xor      uav_read_or      uav_read_and      uav_read_umax     uav_read_umin     uav_read_max      uav_read_min      uav_read_rsub     uav_read_sub      uav_read_add      uav_cmp     uav_xor     uav_or      uav_and     uav_umax    uav_umin      uav_max     uav_min     uav_rsub    uav_sub     uav_add      uav_struct_store  uav_raw_store     uav_store   uav_struct_load      uav_raw_load      uav_load

and atomics for LDS:

lds_read_cmp_xchg lds_read_xchg     lds_read_xor      lds_read_or      lds_read_and      lds_read_umax     lds_read_umin     lds_read_max      lds_read_min      lds_read_rsub     lds_read_sub      lds_read_add      lds_cmp     lds_xor     lds_or      lds_and     lds_umax    lds_umin      lds_max     lds_min     lds_rsub    lds_sub     lds_add      lds_store_vec     lds_load_vec      lds_store   lds_load

Jawed

 

[Jaaanosik]

Either one, the HD5000 or the 7 is wrong. Maybe both. Who knows?

Hmm, is your sig right?

 

[neliz]

Radeon 7 880
Radeon 7 870
Radeon 7 850
Radeon 7 830
-------------
if it's wrong, don't blame on me

I hope you didn't copy that list from tweakers..

 

[mao5]

I hope you didn't copy that list from tweakers..

where's tweaker list?

 

[neliz]

where's tweaker list?

posted about half a day before your post

 

[mao5]

posted about half a day before your post

url or sth ?