NVIDIA Tesla K20 Active vs NVIDIA Tesla K40X Full Specs

Summary

2,496 Shaders 758MHz	2,880 Shaders 875MHz
5GB GDDR5208GB/s	12GB GDDR5288GB/s
Peak·FP32·FP16 3.78 TFLOPS	Peak·FP32·FP16 5.04 TFLOPS
Form Factor PCIe Card	Form Factor PCIe Card
TDP 225W	TDP 235W
Power Connectors 1x 8-Pin 1x 6-Pin	Power Connectors 1x 8-Pin 1x 6-Pin

Highlights

Peak OPS

Peak OPS FP32 FP64 Memory Bandwidth TDP

Tesla K20 Active3.78 TFLOPSFP32

x1

Tesla K40X5.04 TFLOPSFP32

x1.33

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Theoretical Performance

Clock Speed758MHz UC·Base·Boost·OC	Clock Speed875MHz UC·Base·Boost·OC
Peak OPS 3.78 TFLOPSFP32	Peak OPS 5.04 TFLOPSFP32
FP32 3.78 TFLOPS	FP32 5.04 TFLOPS
FP64 1.26 TFLOPS	FP64 1.68 TFLOPS
Pixel Rate 30.3 GPixel/s	Pixel Rate 42 GPixel/s
Texture Rate 157.7 GTexel/s	Texture Rate 210 GTexel/s

Core Config

Shaders 2,496 Shaders	Shaders 2,880 Shaders
TMUs 208 TMUs	TMUs 240 TMUs
ROPs 40 ROPs	ROPs 48 ROPs
SMs 13 SMs	SMs 15 SMs

Clocks

Base Clock 706MHz	Base Clock 745MHz
Boost Clock 758MHz	Boost Clock 875MHz

Cache

L2 Cache 1.5MB shared

L2 Cache 1.5MB shared

Memory

5GB GDDR5	12GB GDDR5
Memory Bus 320-bit	Memory Bus 384-bit
Memory Speed 5.2GT/s	Memory Speed 6GT/s
Memory Bandwidth 208GB/s	Memory Bandwidth 288GB/s

Power & Thermals

TDP 225W

TDP 235W

Encoder

Encoder Model NVENC 1

Encoder Model NVENC 1

Decoder

Decoder Model NVDEC 1

Decoder Model NVDEC 1

Card

Form Factor PCIe Card	Form Factor PCIe Card
PCIe 2-Slots	PCIe 2-Slots
Height 111 mm (4.37") Width 267 mm (10.51") Depth 39 mm (1.53")	Height 111 mm (4.37") Width 267 mm (10.51") Depth 39 mm (1.53")
Cooling Blower 1x Fan	Cooling Passive -
Power Connectors 1x 8-Pin, 1x 6-Pin	Power Connectors 1x 8-Pin, 1x 6-Pin

Chip

Manufacturer NVIDIA	Manufacturer NVIDIA
Chip Designer NVIDIA	Chip Designer NVIDIA
Architecture Kepler	Architecture Kepler
Family Tesla K	Family Tesla K
Branding	Branding
Codename NVF0	Codename NVF0
Chip Variant GK110-400-A1	Chip Variant -
Market Segment Server	Market Segment Server
Release Date Nov 12, 2012	Release Date Nov 22, 2013

Fabrication

Foundry TSMC	Foundry TSMC
Fabrication Node 28nm	Fabrication Node 28nm
Die Size 561mm²	Die Size 561mm²
Transistor Count 7.1 Billion	Transistor Count 7.1 Billion
Transistor Density 12.62 MTr/mm²	Transistor Density 12.62 MTr/mm²

Images

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Competitors

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