NVIDIA · Tesla

NVIDIA Tesla K20Xm

The NVIDIA Tesla K20Xm is a workstation graphics card. It has 6 GB of video memory and a 235 W board power rating. It scores 4,714 in the PassMark G3D benchmark. It supports DirectX 11 and OpenGL 4.6.

Workstation

3/10 key specs recorded · 14 facts

Depth: 27 recorded fields, 5 PassMark workloads

Specification data last verified July 25, 2026 against PassMark Videocard Benchmark. Coverage: 3 of 10 tracked specifications recorded.

PassMark Videocard Benchmark PassMark Videocard Benchmark

Shading units

n/a

Memory

6 GB

Boost clock

n/a

Board power

235 W

Performance

The NVIDIA Tesla K20Xm scores 4,714 in the PassMark G3D benchmark, higher than 79.2% of the 2,658 GPUs benchmarked (PassMark rank #576), measured across 4 submitted results. Its PassMark G2D score is 209.

PassMark G3D Mark

4,714

Rank #576
Faster than 79.2% of 2,658 GPUs
4 samples

0relative to the fastest GPU on record (41,928)

PassMark workload tests

DirectX 9 65 fps

reference: fastest recorded 526 fps · faster than 65.9% of 1,675 GPUs

DirectX 10 24 fps

reference: fastest recorded 231 fps · faster than 64% of 1,602 GPUs

DirectX 11 34 fps

reference: fastest recorded 362 fps · faster than 62.1% of 1,430 GPUs

DirectX 12 20 fps

reference: fastest recorded 213 fps · faster than 53.8% of 1,274 GPUs

GPU Compute 2,360 ops/s

reference: fastest recorded 26,591 ops/s · faster than 67.7% of 1,447 GPUs

Averages of PassMark PerformanceTest submissions; frames/sec are PassMark test-scene rates, not game FPS. Tests PassMark does not report for this card are omitted. PassMark listing

In the PassMark workload tests the NVIDIA Tesla K20Xm averages DirectX 9 65 fps, DirectX 10 24 fps, DirectX 11 34 fps, DirectX 12 20 fps and GPU Compute 2,360 ops/s, across 4 submitted results. Frames per second are PassMark test-scene rates, not game frame rates.

As stated by PassMark

Category Workstation

Bus interface PCIe 3.0 x16

Max memory 6 GB

Core clock 732 MHz

Memory clock 1300 MHz

DirectX 11

OpenGL 4.6

Max TDP 235 W

First benchmarked 2022-02-04

Samples 4

PassMark listing (collected 2026-10-01)

PassMark's own listing for the NVIDIA Tesla K20Xm states the PCIe 3.0 x16 interface, up to 6 GB of memory, a core clock of 732 MHz, DirectX 11 and OpenGL 4.6, first benchmarked on 2022-02-04. These are PassMark's figures, shown separately from the specification tables above.

Memory

Size 6 GB

Type Not recorded

Bus width Not recorded

Bandwidth Not recorded

The NVIDIA Tesla K20Xm is equipped with 6 GB of memory.

Board and power

The NVIDIA Tesla K20Xm has a board power rating of 235 W and it connects over PCIe 3.0 x16.

Board power (TDP) 235 W

Total board power Not recorded

Suggested PSU Not recorded

Power connectors Not recorded

Slot width Not recorded

Length Not recorded

Width Not recorded

Height Not recorded

Cooler Not recorded

Max temperature Not recorded

Bus interface PCIe 3.0 x16

Market

Launched Not recorded

Launch price Not recorded

Status Not recorded

Form factor Not recorded

Segment Data Center

Series Tesla

Benchmarks

PassMark G3D 4,714

PassMark G2D 209

Rank #576

Samples 4

Graphics and compute APIs

The NVIDIA Tesla K20Xm supports DirectX 11 and OpenGL 4.6.

DirectX 11 (stated by PassMark)

OpenGL 4.6 (stated by PassMark)

Feex has no recorded CUDA compute capability for the NVIDIA Tesla K20Xm. Feex has no recorded Vulkan version for the NVIDIA Tesla K20Xm. Feex has no recorded OpenCL version for the NVIDIA Tesla K20Xm.

Frequently asked questions

How much VRAM does the NVIDIA Tesla K20Xm have?

The NVIDIA Tesla K20Xm has 6 GB of video memory.

How much power does the NVIDIA Tesla K20Xm use and what power supply does it need?

The NVIDIA Tesla K20Xm has a board power rating of 235 W.

How fast is the NVIDIA Tesla K20Xm?

The NVIDIA Tesla K20Xm scores 4,714 in the PassMark G3D benchmark, higher than 79.2% of the 2,658 GPUs benchmarked. Its PassMark rank is #576. In the PassMark DirectX 12 test it averages 20 fps.