Tesla K20Xm vs Tesla K40m

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Aggregate performance score

We've compared Tesla K40m and Tesla K20Xm, covering specs and all relevant benchmarks.

Tesla K40m
2013
12 GB GDDR5, 245 Watt
8.15
+7.8%

Tesla K40m outperforms Tesla K20Xm by a small 8% based on our aggregate benchmark results.

Primary details

GPU architecture, market segment, value for money and other general parameters compared.

Place in the ranking510527
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation0.120.10
Power efficiency2.322.24
ArchitectureKepler (2012−2018)Kepler (2012−2018)
GPU code nameGK110BGK110
Market segmentWorkstationWorkstation
Release date22 November 2013 (11 years ago)12 November 2012 (12 years ago)
Launch price (MSRP)$7,699 $7,699

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

Tesla K40m has 20% better value for money than Tesla K20Xm.

Detailed specifications

General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores28802688
Core clock speed745 MHz732 MHz
Boost clock speed876 MHzno data
Number of transistors7,080 million7,080 million
Manufacturing process technology28 nm28 nm
Power consumption (TDP)245 Watt235 Watt
Texture fill rate210.2164.0
Floating-point processing power5.046 TFLOPS3.935 TFLOPS
ROPs4848
TMUs240224

Form factor & compatibility

Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

InterfacePCIe 3.0 x16PCIe 3.0 x16
Length267 mm267 mm
Width2-slot2-slot

VRAM capacity and type

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory typeGDDR5GDDR5
Maximum RAM amount12 GB6 GB
Memory bus width384 Bit384 Bit
Memory clock speed1502 MHz1300 MHz
Memory bandwidth288.4 GB/s249.6 GB/s

Connectivity and outputs

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display ConnectorsNo outputsNo outputs

API compatibility

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX12 (11_1)12 (11_0)
Shader Model5.15.1
OpenGL4.64.6
OpenCL1.21.2
Vulkan1.1.1261.1.126
CUDA3.53.5

Synthetic benchmark performance

Non-gaming benchmark results comparison. The combined score is measured on a 0-100 point scale.


Combined synthetic benchmark score

This is our combined benchmark score. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

Tesla K40m 8.15
+7.8%
Tesla K20Xm 7.56

Passmark

This is the most ubiquitous GPU benchmark. It gives the graphics card a thorough evaluation under various types of load, providing four separate benchmarks for Direct3D versions 9, 10, 11 and 12 (the last being done in 4K resolution if possible), and few more tests engaging DirectCompute capabilities.

Tesla K40m 3143
+7.7%
Tesla K20Xm 2917

Gaming performance

Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.

Pros & cons summary


Performance score 8.15 7.56
Recency 22 November 2013 12 November 2012
Maximum RAM amount 12 GB 6 GB
Power consumption (TDP) 245 Watt 235 Watt

Tesla K40m has a 7.8% higher aggregate performance score, an age advantage of 1 year, and a 100% higher maximum VRAM amount.

Tesla K20Xm, on the other hand, has 4.3% lower power consumption.

Given the minimal performance differences, no clear winner can be declared between Tesla K40m and Tesla K20Xm.


Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite graphics card.


NVIDIA Tesla K40m
Tesla K40m
NVIDIA Tesla K20Xm
Tesla K20Xm

Comparisons with similar GPUs

We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.

Community ratings

Here you can see the user ratings of the compared graphics cards, as well as rate them yourself.


4.6 20 votes

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5 3 votes

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Questions & comments

Here you can ask a question about this comparison, agree or disagree with our judgements, or report an error or mismatch.