Tesla P40 vs Tesla K80

Place in the ranking	366	190
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	2.90
Power efficiency	3.45	8.68
Architecture	Kepler 2.0 (2013−2015)	Pascal (2016−2021)
GPU code name	GK210	GP102
Market segment	Workstation	Workstation
Release date	17 November 2014 (10 years ago)	13 September 2016 (8 years ago)
Launch price (MSRP)	no data	$5,699

Cost-effectiveness evaluation

The higher the performance-to-price ratio, the better. We use the manufacturer's recommended prices for comparison.

no data

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	2496 ×2	3840
Core clock speed	562 MHz	1303 MHz
Boost clock speed	824 MHz	1531 MHz
Number of transistors	7,100 million	11,800 million
Manufacturing process technology	28 nm	16 nm
Power consumption (TDP)	300 Watt	250 Watt
Texture fill rate	171.4 ×2	367.4
Floating-point processing power	4.113 TFLOPS ×2	11.76 TFLOPS
ROPs	48 ×2	96
TMUs	208 ×2	240

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 3.0 x16	PCIe 3.0 x16
Length	267 mm	267 mm
Width	2-slot	2-slot
Supplementary power connectors	1x 8-pin	8-pin EPS

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	12 GB ×2	24 GB
Memory bus width	384 Bit ×2	384 Bit
Memory clock speed	1253 MHz	1808 MHz
Memory bandwidth	240.6 GB/s ×2	347.1 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 and SDK compatibility

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

DirectX	12 (11_1)	12 (12_1)
Shader Model	5.1	6.7
OpenGL	4.6	4.6
OpenCL	1.2	3.0
Vulkan	1.1.126	1.3
CUDA	3.7	6.1

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.

Tesla K80 14.65

Tesla P40 30.70
+110%

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 K80 5852

Tesla P40 12266
+110%

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	14.65	30.70
Recency	17 November 2014	13 September 2016
Maximum RAM amount	12 GB	24 GB
Chip lithography	28 nm	16 nm
Power consumption (TDP)	300 Watt	250 Watt

Tesla P40 has a 109.6% higher aggregate performance score, an age advantage of 1 year, a 100% higher maximum VRAM amount, a 75% more advanced lithography process, and 20% lower power consumption.

The Tesla P40 is our recommended choice as it beats the Tesla K80 in performance tests.