Radeon X850 CrossFire Edition vs Tesla K40s

Primary details

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

Place in performance ranking	not rated	not rated
Place by popularity	not in top-100	not in top-100
Architecture	Kepler (2012−2018)	R400 (2004−2008)
GPU code name	GK110B	R480
Market segment	Workstation	Desktop
Release date	22 November 2013 (10 years ago)	10 September 2006 (17 years ago)
Launch price (MSRP)	$7,699	no data
Current price	no data	$248

Detailed specifications

General performance parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. These parameters indirectly speak of performance, but for precise assessment you have to consider their benchmark and gaming test results. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores	2880	no data
Core clock speed	745 MHz	520 MHz
Boost clock speed	876 MHz	no data
Number of transistors	7,080 million	160 million
Manufacturing process technology	28 nm	130 nm
Power consumption (TDP)	245 Watt	no data
Texture fill rate	210.2	8.320
Floating-point performance	4,291 gflops	no data

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 1.0 x16
Length	267 mm	no data
Width	2-slot	2-slot
Supplementary power connectors	no data	1x 6-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	GDDR3
Maximum RAM amount	12 GB	256 MB
Memory bus width	384 Bit	256 Bit
Memory clock speed	6008 MHz	1080 MHz
Memory bandwidth	288.4 GB/s	34.56 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

2x DVI

API compatibility

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

DirectX	12 (11_1)	9.0b (9_2)
Shader Model	5.1	no data
OpenGL	4.6	2.0
OpenCL	1.2	N/A
Vulkan	1.1.126	N/A
CUDA	3.5	no data

Pros & cons summary

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Recency	22 November 2013	10 September 2006
Maximum RAM amount	12 GB	256 MB
Chip lithography	28 nm	130 nm

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