Thanks.
So both NV31 and NV34 are 4x1 architectures with 128-bit DDR-I memory interfaces. NV31 uses a new DDR-I controller, while the NV34 unit is based on that of the NV18. Features such as colour compression are missing from NV34 to save costs.
NV31 is capable of "6 ops/clk" - seems to suggest 6 zixel output/clk and of course, 4 coloured pixel output/clk if it is a "true" 4x1 architecture as Dave & CMKRNL suggest. Hardware VS support is assumed for now (we'll have to see how comprehensive this is once people have boards, heh).
NV34 is capable of "4 ops/clk" - so again assuming it is 4x1, then 4 zixel/4 pixel output/clk. Looks pretty likely that it has software-based VS support, although may have a DX7 T&L unit.
Got a quite interesting e-mail today from somebody with board-level dev experience of NV34 & NV31 (so no in-depth ASIC knowledge unfortunately). Nothing revolutionary; just confirms what most people have suspected. All NV3x parts are spun internally as being based on the same "Cinematic Engine" (i.e. DX-level support) which is closely associated with certain ASIC cell groups. Unlike in the past where mainstream products have been developed by re-hashing old ASICs, their most contemporary ideas involve scaleability of a single architecture. Makes you wonder how easily they can go "up" as well as down, eh?
MuFu.
So both NV31 and NV34 are 4x1 architectures with 128-bit DDR-I memory interfaces. NV31 uses a new DDR-I controller, while the NV34 unit is based on that of the NV18. Features such as colour compression are missing from NV34 to save costs.
NV31 is capable of "6 ops/clk" - seems to suggest 6 zixel output/clk and of course, 4 coloured pixel output/clk if it is a "true" 4x1 architecture as Dave & CMKRNL suggest. Hardware VS support is assumed for now (we'll have to see how comprehensive this is once people have boards, heh).
NV34 is capable of "4 ops/clk" - so again assuming it is 4x1, then 4 zixel/4 pixel output/clk. Looks pretty likely that it has software-based VS support, although may have a DX7 T&L unit.
Got a quite interesting e-mail today from somebody with board-level dev experience of NV34 & NV31 (so no in-depth ASIC knowledge unfortunately). Nothing revolutionary; just confirms what most people have suspected. All NV3x parts are spun internally as being based on the same "Cinematic Engine" (i.e. DX-level support) which is closely associated with certain ASIC cell groups. Unlike in the past where mainstream products have been developed by re-hashing old ASICs, their most contemporary ideas involve scaleability of a single architecture. Makes you wonder how easily they can go "up" as well as down, eh?
MuFu.
