Radeon R9 390X2 vs GeForce GT 640

Primary details

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

Place in the ranking	770	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.20	no data
Power efficiency	3.22	no data
Architecture	Kepler (2012−2018)	GCN (2012−2015)
GPU code name	GK107	no data
Market segment	Desktop	Desktop
Release date	5 June 2012 (12 years ago)	no data
Launch price (MSRP)	$99	no data

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

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	384	2
Core clock speed	902 MHz	no data
Boost clock speed	no data	1000 MHz
Number of transistors	1,270 million	no data
Manufacturing process technology	28 nm	no data
Power consumption (TDP)	65 Watt	no data
Texture fill rate	28.86	no data
Floating-point processing power	0.6927 TFLOPS	no data
ROPs	16	no data
TMUs	32	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	no data
Length	145 mm	no data
Width	1-slot	no data
Supplementary power connectors	None	no data

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	DDR3	512
Maximum RAM amount	2 GB	no data
Memory bus width	128 Bit	5400 Bit
Memory clock speed	891 MHz	no data
Memory bandwidth	28.51 GB/s	no data

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	1x DVI, 1x HDMI, 1x DisplayPort	no data
HDMI	+	-

API compatibility

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

DirectX	12 (11_0)	GDDR5
Shader Model	5.1	no data
OpenGL	4.6	no data
OpenCL	1.2	no data
Vulkan	1.1.126	-
CUDA	3.0	-

Pros & cons summary

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