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TESLA K20 SPECS

post #1 of 3
Thread Starter 
Nvidia seems to have finalized Tesla K20 specs.

http://www.cadnetwork.de/konfigurator/gpu_rackserver_proviz_g13/system=88

2496 cuda coress, core clock 705 MHz, 5 GB memory, 320-bit bus,40 ROPs

Single precision (SP) = 705 Mhz x 2496 x 2 = 3.52 TFLOPS.

http://www.anandtech.com/show/5840/gtc-2012-part-1-nvidia-announces-gk104-based-tesla-k10-gk110-based-tesla-k20/2

"GK110 SMXes will contain 192 CUDA cores (just like GK104), but deviating from GK104 they will contain 64 CUDA FP64 cores (up from 8, which combined with the much larger SMX count is what will make K20 so much more powerful at double precision math than K10."

GK110 has a 3:1 ratio between SP and DP units per SMX = 192: 64

Double precision (DP) = 3.52 /3 = 1.17 TFLOPS

The 320 bit memory bus for the high end Tesla K20 SKU is a clear indication of yield problems. This kind of crippling is unheard of on the flagship Tesla SKU. This does not bode well at all for desktop GK110. Nvidia might clock their desktop GK110 at 775 - 800 Mhz but the extent of the chip being crippled is definitely going to affect perf and perf/watt.

A fully enabled GK110 based Tesla or Geforce chip can only be expected in H2 2013. Until then users have to make do with this crippled SKU.
Edited by raghu78 - 10/15/12 at 11:21pm
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post #2 of 3
7970 @ 1200MHz

1.2 x 2048 x 2 = 4.91 TFLOPS SP..... vs 3.52 TFLOPS of K20
4.91 TFLOPS /4 = 1.22 TFLOPS DP ..... vs 1.17 TFLOPS of K20.

8970 will only raise this bar higher. thumb.gif
post #3 of 3
Thread Starter 
http://www.computerworld.com.au/article/441702/nvidia_amd_release_graphics_processors_supercomputing/

K20 specs work out to 705 Mhz, 2496 cuda cores, 5 GB GDDR5, 320 bit memory.

705 x 2496 x 2 = 3.51 TFLOPS SP
= 3.51/3 = 1.17 TFLOPS DP

K20x specs work out to 732 Mhz, 2688 cuda cores, 6 GB GDDR5, 384 bit memory.

732 x 2688 x 2 = 3.93 TFLOPS SP
= 3.93/3 = 1.31 TFLOPS DP

looks more like K20 will fit 225w TDP

http://www.techpowerup.com/173846/Te...ased.html?cp=2

while K20x will be 300w TDP. the desktop GTX 780 could be based of a 800 Mhz , 2880 cuda cores chip with a TDP of 270 - 300w . looks like Nvidia will be stockpiling the full GK110 chip for a Q1 2013 launch.
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