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NVIDIA Tesla K20s

Graphics Processor
GK110
Cores
2496
TMUs
208
ROPs
40
Memory Size
5 GB
Memory Type
GDDR5
Bus Width
320 bit
GPU Chip
GPU
The Tesla K20s was an enthusiast-class professional graphics card by NVIDIA, launched on February 18th, 2013. Built on the 28 nm process, and based on the GK110 graphics processor, the card supports DirectX 12. The GK110 graphics processor is a large chip with a die area of 561 mm² and 7,080 million transistors. Unlike the fully unlocked GeForce GTX TITAN, which uses the same GPU but has all 2688 shaders enabled, NVIDIA has disabled some shading units on the Tesla K20s to reach the product's target shader count. It features 2496 shading units, 208 texture mapping units, and 40 ROPs. NVIDIA has paired 5 GB GDDR5 memory with the Tesla K20s, which are connected using a 320-bit memory interface. The GPU is operating at a frequency of 575 MHz, memory is running at 1300 MHz (5.2 Gbps effective).
Being a dual-slot card, its power draw is rated at 225 W maximum. This device has no display connectivity, as it is not designed to have monitors connected to it. Tesla K20s is connected to the rest of the system using a PCI-Express 2.0 x16 interface. The card measures 267 mm in length, and features a dual-slot cooling solution. Its price at launch was 3199 US Dollars.

Graphics Processor

GPU Name
GK110
Architecture
Kepler
Foundry
TSMC
Process Size
28 nm
Transistors
7,080 million
Density
12.6M / mm²
Die Size
561 mm²
Chip Package
BGA-2152

Graphics Card

Release Date
Feb 18th, 2013
Generation
Tesla Kepler
(Kxx)
Predecessor
Tesla Fermi
Successor
Tesla Maxwell
Production
End-of-life
Launch Price
3,199 USD
Bus Interface
PCIe 2.0 x16

Relative Performance

GeForce 210
4%
GeForce 9400 GT
5%
Radeon HD 4550
6%
Radeon HD 5450
7%
Radeon HD 6450
9%
GeForce GT 520
9%
GeForce GT 220
11%
GeForce GT 430
15%
Radeon HD 5570
15%
Radeon HD 4670
16%
GeForce GT 440
17%
GeForce GT 240
17%
GeForce 9600 GT
20%
Radeon HD 5670
21%
GeForce GT 640
23%
GeForce 9800 GT
23%
Radeon HD 6670
24%
Radeon HD 4830
25%
Radeon HD 4770
27%
Radeon HD 4850
28%
GeForce GTS 250
29%
GeForce GTS 450
30%
Radeon HD 5750
31%
Radeon HD 7750
35%
Radeon HD 5770
36%
GeForce GTX 260
36%
Radeon HD 4870
37%
Radeon Vega 8
37%
GeForce GTX 550 Ti
37%
GeForce GTX 650
37%
Radeon HD 5830
40%
Radeon HD 6790
42%
Radeon HD 4890
42%
GeForce GTX 460
44%
Radeon RX Vega 11
44%
GeForce GT 1030
45%
GeForce GTX 275
45%
Radeon HD 7770 GHz Edition
45%
GeForce GTX 280
45%
GeForce GTX 465
46%
Radeon HD 6850
48%
GeForce GTX 285
49%
Radeon HD 5850
53%
GeForce GTX 650 Ti
54%
Radeon HD 7790
54%
Radeon RX 550
56%
GeForce GTX 470
56%
Radeon HD 6870
58%
Radeon HD 5870
62%
GeForce GTX 560 Ti
64%
Radeon HD 4870 X2
65%
GeForce GTX 750 Ti
66%
Radeon HD 6950
66%
GeForce GTX 295
68%
GeForce GTX 650 Ti Boost
69%
Radeon HD 7850
70%
GeForce GTX 480
71%
Radeon HD 6970
74%
Radeon R7 265
76%
Radeon RX 460
77%
Radeon R7 370
77%
GeForce GTX 660
77%
GeForce GTX 570
77%
Radeon RX 560
79%
GeForce GTX 950
83%
Radeon HD 7870 GHz Edition
84%
Radeon R9 270X
86%
GeForce GTX 660 Ti
87%
GeForce GTX 580
88%
GeForce GTX 1050
88%
Radeon HD 7950
89%
GeForce GTX 1630
90%
Radeon HD 5970
90%
GeForce GTX 760
93%
GeForce GTX 670
100%
Tesla K20s
100%
GeForce GTX 960
103%
Radeon R9 380
105%
Radeon R9 285
106%
Radeon HD 7970
107%
GeForce GTX 680
108%
GeForce GTX 1050 Ti
110%
GeForce GTX 770
113%
Radeon HD 6990
116%
Radeon R9 280X
119%
GeForce GTX 590
120%
Radeon HD 7970 GHz Edition
121%
GeForce GTX 780
134%
Arc A380
134%
Radeon RX 6400
136%
GeForce GTX 1650
138%
Radeon RX 470
147%
Radeon R9 290
149%
Radeon RX 570
157%
Radeon R9 390
159%
Radeon R9 290X
160%
GeForce GTX 970
162%
GeForce GTX TITAN
164%
GeForce GTX 780 Ti
166%
Radeon R9 390X
169%
Radeon HD 7990
169%
Radeon RX 480
170%
GeForce GTX 690
172%
GeForce GTX 1060 6 GB
176%
Radeon RX 5500 OEM
179%
Radeon RX 580
181%
Radeon RX 5500 XT
182%
Radeon RX 6500 XT
184%
GeForce GTX 980
185%
GeForce GTX 1650 SUPER
186%
Radeon R9 FURY
187%
Radeon RX 590
195%
Radeon R9 295X2
206%
GeForce GTX 1660
207%
Radeon R9 FURY X
209%
GeForce GTX 980 Ti
213%
GeForce GTX TITAN X
218%
GeForce GTX 1660 SUPER
225%
GeForce GTX 1070
237%
GeForce GTX 1660 Ti
237%
GeForce RTX 3050 8 GB
241%
Radeon RX Vega 56
253%
GeForce GTX 1070 Ti
268%
Radeon RX 5600 XT
272%
Radeon RX Vega 64
276%
GeForce GTX 1080
280%
GeForce RTX 2060
280%
Radeon RX 5700
291%
Arc A580
292%
Radeon RX 6600
304%
GeForce RTX 2060 SUPER
314%
GeForce RTX 2070
318%
Radeon RX 5700 XT
318%
GeForce RTX 3060 12 GB
325%
Arc A750
335%
Radeon VII
337%
TITAN X Pascal
346%
Radeon RX 6600 XT
349%
GeForce GTX 1080 Ti
356%
Arc A770
360%
GeForce RTX 2070 SUPER
360%
Radeon RX 6650 XT
379%
Radeon RX 7600
383%
GeForce RTX 4060
385%
GeForce RTX 2080
387%
Radeon RX 7600 XT
395%
GeForce RTX 2080 SUPER
406%
GeForce RTX 3060 Ti
416%
Radeon RX 6700 XT
430%
Radeon RX 6750 XT
457%
GeForce RTX 4060 Ti 8 GB
462%
GeForce RTX 2080 Ti
465%
GeForce RTX 3070
487%
GeForce RTX 3070 Ti
521%
Radeon RX 7700 XT
527%
Radeon RX 6800
537%
GeForce RTX 4070
595%
Radeon RX 6800 XT
610%
GeForce RTX 3080
633%
Radeon RX 7800 XT
639%
Radeon RX 6900 XT
657%
GeForce RTX 4070 SUPER
690%
Radeon RX 7900 GRE
703%
GeForce RTX 3080 Ti
709%
Radeon RX 6950 XT
710%
GeForce RTX 3090
722%
GeForce RTX 4070 Ti
740%
GeForce RTX 4070 Ti SUPER
809%
Radeon RX 7900 XT
831%
GeForce RTX 3090 Ti
838%
GeForce RTX 4080
941%
GeForce RTX 4080 SUPER
955%
Radeon RX 7900 XTX
964%
GeForce RTX 4090
1182%
Based on TPU review data: "Performance Summary" at 1920x1080, 4K for 2080 Ti and faster.
Performance estimated based on architecture, shader count and clocks.

Clock Speeds

GPU Clock
575 MHz
Memory Clock
1300 MHz
5.2 Gbps effective

Memory

Memory Size
5 GB
Memory Type
GDDR5
Memory Bus
320 bit
Bandwidth
208.0 GB/s

Render Config

Shading Units
2496
TMUs
208
ROPs
40
SMX Count
13
L1 Cache
16 KB (per SMX)
L2 Cache
1280 KB

Theoretical Performance

Pixel Rate
29.90 GPixel/s
Texture Rate
119.6 GTexel/s
FP32 (float)
2.870 TFLOPS
FP64 (double)
956.8 GFLOPS (1:3)

Board Design

Slot Width
Dual-slot
Length
267 mm
10.5 inches
TDP
225 W
Suggested PSU
550 W
Outputs
No outputs

Graphics Features

DirectX
12 (11_0)
OpenGL
4.6
OpenCL
3.0
Vulkan
1.2.175
CUDA
3.5
Shader Model
6.5 (5.1)

GK110 GPU Notes

NVENC: 1st Gen
NVDEC: 1st Gen
PureVideo HD: VP5
VDPAU: Feature Set D

L1 Cache is configurable from 16 KB up to 48 KB per SMX

GK110 has 5 GPCs each capable of 8 pixels per clock. This limits complete GPU to 40 pixels per clock and because of that it can't feed all 48 ROPs when they all require data at the same time.
Additional ROPs however can be used for MSAA (because it doesn't require additional data from rasterizers, while giving more work to ROPs.)
Apr 23rd, 2024 09:54 EDT change timezone

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