Just hours away from Nvidia’s GF100 release, 3dCenter has leaked information on Nvidia’s GF100 derivative – GF104. In general, the article seems very speculative, and the details are obscure at best.

GF104 is reported to consist of 256 SP – half of GF100. However, for some reason, it features the same number of TMUs – 64; and only 33% less ROP – 32. Memory bus is down to 256-bit – the same as ATI’s Cypress.

More details next page.


Just hours away from Nvidia’s GF100 release, 3dCenter has leaked
information on Nvidia’s GF100 derivative – GF104. In general, the
article seems very speculative, and the details are obscure at best.

GF104 is reported to consist of 256 SP – half of GF100. However, for
some reason, it features the same number of TMUs – 64; and only 33% less
ROP – 32. Memory bus is down to 256-bit – the same as ATI’s Cypress.

It is suggested that the GF104 will cover three products – Geforce GTS 430, 440 and 450. The 440 and 450 will have no parts disabled, but separated by clock speeds. The 430, however, will feature only 192 SP, 192-bit memory and 24 ROPs – a pretty significant amount of disabling by any means – in addition to 20% lower clock speeds than the 450.

The 430 will be aimed at the Radeon HD 5770, the 450 at the Radeon HD 5830, with the 440 filling the gap, with prices according the the ATI products.

The die size is expected to be in excess of 320 mm2, and about the same as Cypress. Unfortunately, it will be competing with the HD 5770 which is less than half the size. The top end 450, though, will be competing with the HD 5830 – a Cypress chip, albeit heavily disabled defective/harvest chips. TDP will be up to 150W, once again significantly greater than that of HD 5770, although competing directly with the HD 5830.

There’s no concrete mention of a release date, though a best case realistic target seems like Q3 2010.

At this stage, all these details seem to be nothing but unsubstantiated speculation, and indeed, some of the specifications and comparisons just don’t make much sense.

In addition to GF104, two more derivative products are expected – GF106 and GF108, with no signs of a dual-GPU, at least in this A3 stepping.

It has also been suggested previously that GF108 has been taped out and will be the first derivative to be launched. Indeed, that makes sense considering GF100’s manufacturing troubles – when in trouble, going back to the very basic makes most sense.

Reference: 3DCenter