blackangus
Member
- Aug 5, 2022
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Nice, just seeing rumors for the opposite saying consumer is pushed back to 2025.Neither is delayed.
Nice, just seeing rumors for the opposite saying consumer is pushed back to 2025.Neither is delayed.
It was always somewhere H1'25.saying consumer is pushed back to 2025.
It was always somewhere H1'25.
Guys, I have updated the frontpage with the GDDR7 info as standard memory config for RTX5090 series. As per MLID, NV has been stockpiling GDDR7 in order to prepare launching of Blackwell series:
- With GDDR7, RTX5090 still offer same memory bandwidth as 512-bit GDDR6X. Plus there is option for 36GB version (most likely going to be called RTX5090Ti, want to guess how much would it cost????)
- The rest of the lineup should continue using GDDR6X, that's mean RTX5080Ti has similar specs compared to current RTX4090.
256-bit GDDR7 provides 1TB/s memory bandwidth. If using 384-bit 24Gbps GDDR6X, it provides 1.15TB/s memory bandwidth, yeah NV definitely needs as much bandwidth as possible. Therefore 384-bit GDDR6X seems better choice for GB203.For 256-bit, you'd need 32 gbps to get similar bandwidth to the 4090.
256-bit GDDR7 provides 1TB/s memory bandwidth. If using 384-bit 24Gbps GDDR6X, it provides 1.15TB/s memory bandwidth, yeah NV definitely needs as much bandwidth as possible. Therefore 384-bit GDDR6X seems better choice for GB203.
As for L2 cache, RTX4080 is having 64MB L2 with 256-bit memory bus. If GB203 is having 384-bit bus, 96MB L2 cache is possible cause full die AD102 is actually having 96MB L2....
And I have calculated 384-bit GDDR6X has bigger memory bandwidth, bring up your Excel to calculate...It's much more likely for GB203 to be 256-bit and 64 MB L2 (or less). Remember that N3E has no cache scaling at all.
I think I know why NV has intentionally crippled amount of L2 on AD102 from 96MB to 72MB..
Yeah, part of the reason but NV has not crippled AD103 on RTX4080. Go figure...And I think NV has every intention to use 384-bit bus which associated with bigger L2 cache4090 you mean, and probably yield and/or segmentation. There's a Quadro which has the full AD102 configuration including 96 MB of L2.
NP, why not you create a table like I did and list down your speculated specs and see whether it make sense or not? Trust me, it will be funI see it like this:
GB202: 384 bit
GB203: 256 bit
GB205: 192 bit (or less)
GB206: 128 bit
GB207: 96 bit, maybe 128
NP, why not you create a table like I did and list down your speculated specs and see whether it make sense or not? Trust me, it will be fun
Then why do NV release something slower to compete?? That's why I assume GB205 comes with 256-bit memory bus which compete with RDNA5 with 256-bit GDDR7. If NV is not bring up the best of BW, then they will lose out, do you think NV, the AI company don't know the competitors??No. But I think the faster GB203 will be a bit faster than the 4090 in raster and the slower GB203 being slower than the 4090 but decently better than the 4080S. The slower being $1199 or so.
GB205 is going to be the real question since I think it's going to be a lot slower than any of the GB203 SKUs.
And why did NV release RTX4070Ti Super with 256-bit 16GB then downgrade to 192-bit???
Hoho, RGT has posted video about Blackwell lineup, he also think whole lineup will use GDDR7. Does he really count the memory config and size? I have created a table on the frontpage to compare my version versus RGT's version. I really hope after seeing the table no members are fool enough to believe such config make sense...
Will most of the older PC owners with PCIe 3.0 have problems with GB107 and the x4 connection?
There's no ada rebrand. Nvidia haven't mixed 2 gens in one series since Geforce 700 series ten years ago. AMD also stopped doing it after GCN 3.0 8 years ago.With an Ada rebrand
Even If GB could clock higher, It would also apply to GB202 or GB203.My totally accurate calculations has it as:
GB202 - 192 SM (12*8)
GB203 - 112 SM (7*8)
GB205 - 48 SM (4*6)
GB206 - 24 SM (3*4)
GB207 - 18 SM (3*3)
With an Ada rebrand (or two) filling in the gap between GB203 and GB205. Yeah I know the lower tier products have less SMs, I am accounting for a big drop in die size in those to make up for N3E's prices and lots of room taken up by Tensor/AI. Perhaps the clock speed gains will be there.