Tesla K20m vs Tesla M2070

Place in the ranking	634	414
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.10	0.59
Power efficiency	1.51	3.56
Architecture	Fermi (2010−2014)	Kepler (2012−2018)
GPU code name	GF100	GK110
Market segment	Workstation	Workstation
Release date	25 July 2011 (13 years ago)	5 January 2013 (11 years ago)
Launch price (MSRP)	$3,099	$3,199

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

Tesla K20m has 490% better value for money than Tesla M2070.

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 cores	448	2496
Core clock speed	574 MHz	706 MHz
Number of transistors	3,100 million	7,080 million
Manufacturing process technology	40 nm	28 nm
Power consumption (TDP)	225 Watt	225 Watt
Texture fill rate	32.14	146.8
Floating-point processing power	1.03 TFLOPS	3.524 TFLOPS
ROPs	48	40
TMUs	56	208

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).

Interface	PCIe 2.0 x16	PCIe 2.0 x16
Length	248 mm	267 mm
Width	2-slot	2-slot
Supplementary power connectors	1x 6-pin + 1x 8-pin	1x 6-pin + 1x 8-pin

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 type	GDDR5	GDDR5
Maximum RAM amount	6 GB	5 GB
Memory bus width	384 Bit	320 Bit
Memory clock speed	783 MHz	1300 MHz
Memory bandwidth	150.3 GB/s	208.0 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 Connectors

No outputs

API compatibility

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

DirectX	12 (11_0)	12 (11_0)
Shader Model	5.1	5.1
OpenGL	4.6	4.6
OpenCL	1.1	1.2
Vulkan	N/A	1.1.126
CUDA	2.0	3.5

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	4.88	11.49
Recency	25 July 2011	5 January 2013
Maximum RAM amount	6 GB	5 GB
Chip lithography	40 nm	28 nm

Tesla M2070 has a 20% higher maximum VRAM amount.

Tesla K20m, on the other hand, has a 135.5% higher aggregate performance score, an age advantage of 1 year, and a 42.9% more advanced lithography process.

The Tesla K20m is our recommended choice as it beats the Tesla M2070 in performance tests.

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