First Look of 55nm GeForce GTX260
December 5th, 2008 by Sue Graphics, NVIDIA
Since we unveiled
the first image of 55nm GT200, we thought it would take longer for concrete products getting prepared. Nobody is sure whether it has NDA problem.
As we estimated, GeForce GTX 260 and
GTX295 based on 55nm GT200 will not be available until January next year.
New Zotac GeForce 260 Graphic Card based on NVIDIA P654 PCB design
Not all the manufacturers are capable of producing VGA cards like GeForce GTX260 of such complicated structure. Most of them tend to purchase reference cards by NVIDIA, and then put on labels of their own logo.
However, friends from Zotac claims they have been prepared to manufacture the latest version of GeForce GTX260 on their own, and send us the pictures below to prove their saying.
Except for the PCB is changed to be blue color, we don’t find any difference on it from reference card. So I am going to introduce them together.
The above pictures are both NVIDIA reference cards
Based on brand-new P654 reference design, the latest version of GeForce GTX260 Graphic Card utilizes 26.5CM PCB.
All the 14 video memories are put on the front side of PCB, with 10 layers of PCB design. Previous P651 PCB shared by GeForce GTX260/280 was 14 layers.
Previous version of GTX260’s features 3+2 phase power module (The 3 CSP sealed Volterra VT1195SF MULTIPHASE chip would be most eye-catching).
Remark by one of AIC: the difficulty in purchasing Volterra has resulted in limits to mass production.
New P654 power modules has upgraded to 4+2 phase, equipping solid-state capacitor, magnetism shield inductance and MOSFET.
Where the two 6Pin are connected features a large input inductance separately. Therefore, the reduced difficulties in design will bring down the cost.
The GT200b of GeForce GTX260 will be renamed to be “G200-103-B2” instead of 65nm “G200-103-A2”. The “B” means newest 55nm processing is used.
The number of its stream processors remains as 216. The video memory uses Samsung K4J52324QH-HJ1A chip. The specs are 896MB/448bit, with default frequency of 575/2000MHz and memory bandwidth of 112GB/s.
Updated GeForce 260GTX continues to use all-in-one cooler by CoolerMaster, in order to cool the chip, video memory and power module effectively.
The cooler is equipped with four copper heat sinks and 80mm concave turbofan with temperature controller. The heat sinks and fins are connected together by jointing. Due to the change of circuit, design of cooler has been adjusted accordingly.
As it will not be available until Jan next year, we’re not sure about its retail price.
Its frequency stays the same as 65nm’s, so there won’t be much difference in performance. But we can expect its overclocking ability and power consumption will be improved thanks to 55nm GT200.
BTW: This significant AMP product from Zotac will upgrade to 0.8ns for higher default frequency.
GT200b/GT206 gets a new PCB
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