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NVIDIA G300 frequencies revealed?

by Parm Mann on 19 May 2009, 10:28

Tags: NVIDIA (NASDAQ:NVDA)

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There seems to be a pre-COMPUTEX lull in terms of hardware announcements, but there's nothing like a bit of high-end GPU conjecture to kick start a dull and overcast British morning.

If you believe everything you read on the web, you may recently have heard that NVIDIA's G300 architecture - successor to the current G200 - has been making steady progress. According to various reports, the forthcoming 40nm GPU has already been taped out and engineering samples should be just around the corner.

Today, the rumours are cranking up a notch as German site hardware-infos.com claims to have the details of the G300 GPU's core, shader and memory frequencies. NVIDIA's keeping quiet, of course, and we can't comment on the authenticity of these figures, but should the numbers be accurate, here's what we're looking at:


Graphics cards NVIDIA GeForce GTX 3** (G300) NVIDIA GeForce GTX 295 NVIDIA GeForce GTX 285
1,024MB
NVIDIA GeForce GTX 280 1,024MB NVIDIA GeForce GTX 275 896MB NVIDIA GeForce GTX 260 896MB
PCIe PCIe 2.0
GPU(s) clock 700MHz 576MHz 648MHz 602MHz 633MHz 576MHz
Shader clock 1,600MHz 1,242MHz 1,476MHz 1,296MHz 1,404MHz 1,242MHz
Memory clock (effective) 2,200MHz 1,998MHz 2,484MHz 2,214MHz 2,268MHz 1,998MHz
Memory interface and size 512-bit, 1,024MB, GDDR5 448-bit (per GPU), 1,792MB, GDDR3 512-bit, 1,024MB, GDDR3 512-bit, 1,024MB, GDDR3 448-bit, 896MB, GDDR3 448-bit, 896MB, GDDR3
Manufacturing process TSMC, 40nm TSMC, 55nm TSMC, 55nm TSMC, 65nm TSMC, 55nm TSMC, 65nm
DirectX/ Shader Model DX11, 5.0 DX10, 4.0 DX10, 4.0 DX10, 4.0 DX10, 4.0 DX10, 4.0
Vertex, fragment, geometry shading (shared) 512 FP32 scalar ALUs, MADD dual-issue + MUL (unified) 480 FP32 scalar ALUs, MADD dual-issue + MUL (unified) 240 FP32 scalar ALUs, MADD dual-issue + MUL (unified) 240 FP32 scalar ALUs, MADD dual-issue + MUL (unified) 240 FP32 scalar ALUs, MADD dual-issue + MUL (unified) 216 FP32 scalar ALUs, MADD dual-issue + MUL (unified)
Peak GFLOPS 2,457 1,788 1,063 933 1,011 805
*unannounced GPU, rumoured specification

Sounds bigger and badder - as always - but we must reiterate that the numbers are anything but confirmed. Interesting nonetheless, and more so following last month's rumoured-reveal of ATI's Radeon HD 5870.

Will we be seeing samples of either GPU at next month's COMPUTEX? Seems a little too soon, we reckon, but the Taiwanese show is as good a place as any for the green or read teams to pull out a surprise.



HEXUS Forums :: 12 Comments

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that looks nothing more than expected.. anyone want to vs it with ati's future card specs?
Surely if it's running GDDR5 the effective memory clock should be in the region of 4400MHz, not 2200?
scaryjim
Surely if it's running GDDR5 the effective memory clock should be in the region of 4400MHz, not 2200?
Why would it?

My ATi card has GDDR5 and its design limit is 2200Mhz effective. It's DDR, not QDR. ;)
one word… Expensive!. If that came out it would cost a crap load, look at the buffer! 512bit and with ddr5 that must cost one arm to make and sell for an arm and a leg lol.

Wont really worry about specs still its even announced lol.
aidanjt
Why would it?

My ATi card has GDDR5 and its design limit is 2200Mhz effective. It's DDR, not QDR. ;)

Because the HD4870 has 3600Mhz GDDR5 memory and the HD4890 has 3900Mhz GDDR5 memory> http://www.hexus.net/content/item.php?item=18359&page=3

Not sure what card you have but if you are looking at frequencies in an overclocking tool such as RivaTuner or AMD Overdrive you are seeing the base clock which is then multiplied by 2 to get the effective clock. So a max of 2200Mhz showed in a overclocking tool is in fact 4400Mhz effective frequency. GPU-Z also shows you the base clock of the card not the effective clock with multiplyers in place.