Radeon RX 580 2048SP vs GeForce GT 640 Rev. 2

Place in the ranking	724	276
Place by popularity	not in top-100	53
Cost-effectiveness evaluation	0.19	no data
Power efficiency	4.96	9.11
Architecture	Kepler 2.0 (2013−2015)	GCN 4.0 (2016−2020)
GPU code name	GK208	Polaris 20
Market segment	Desktop	Desktop
Release date	29 May 2013 (11 years ago)	15 October 2018 (6 years ago)
Launch price (MSRP)	$89	no data

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

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	384	2048
Core clock speed	1046 MHz	1168 MHz
Boost clock speed	no data	1284 MHz
Number of transistors	915 million	5,700 million
Manufacturing process technology	28 nm	14 nm
Power consumption (TDP)	49 Watt	150 Watt
Texture fill rate	33.47	164.4
Floating-point processing power	0.8033 TFLOPS	5.259 TFLOPS
ROPs	8	32
TMUs	32	128

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 x8	PCIe 3.0 x16
Length	145 mm	241 mm
Width	1-slot	2-slot
Supplementary power connectors	None	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	1 GB	8 GB
Memory bus width	64 Bit	256 Bit
Memory clock speed	1252 MHz	1750 MHz
Memory bandwidth	40.06 GB/s	224.0 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	1x DVI, 1x HDMI, 1x VGA	1x DVI, 1x HDMI, 3x DisplayPort
HDMI	+	+

API compatibility

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

DirectX	12 (11_0)	12 (12_0)
Shader Model	5.1	6.4
OpenGL	4.6	4.6
OpenCL	1.2	2.0
Vulkan	1.1.126	1.2.131
CUDA	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	3.55	19.94
Recency	29 May 2013	15 October 2018
Maximum RAM amount	1 GB	8 GB
Chip lithography	28 nm	14 nm
Power consumption (TDP)	49 Watt	150 Watt

GT 640 Rev. 2 has 206.1% lower power consumption.

RX 580 2048SP, on the other hand, has a 461.7% higher aggregate performance score, an age advantage of 5 years, a 700% higher maximum VRAM amount, and a 100% more advanced lithography process.

The Radeon RX 580 2048SP is our recommended choice as it beats the GeForce GT 640 Rev. 2 in performance tests.

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