Radeon 540 vs GeForce GT 640 Rev. 2

Place in the ranking	720	715
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.19	0.10
Power efficiency	5.05	4.99
Architecture	Kepler 2.0 (2013−2015)	GCN 4.0 (2016−2020)
GPU code name	GK208	Lexa
Market segment	Desktop	Desktop
Release date	29 May 2013 (11 years ago)	20 April 2017 (7 years ago)
Launch price (MSRP)	$89	$79

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

GT 640 Rev. 2 has 90% better value for money than Radeon 540.

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	384
Core clock speed	1046 MHz	1183 MHz
Boost clock speed	no data	1124 MHz
Number of transistors	915 million	2,200 million
Manufacturing process technology	28 nm	14 nm
Power consumption (TDP)	49 Watt	50 Watt
Texture fill rate	33.47	28.39
Floating-point processing power	0.8033 TFLOPS	0.9085 TFLOPS
ROPs	8	16
TMUs	32	24

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 x8
Length	145 mm	145 mm
Width	1-slot	1-slot
Supplementary power connectors	None	None

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	1 GB
Memory bus width	64 Bit	32 Bit
Memory clock speed	1252 MHz	1500 MHz
Memory bandwidth	40.06 GB/s	24 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	2x DisplayPort 1.4a
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	6.7
OpenGL	4.6	4.6
OpenCL	1.2	2.1
Vulkan	1.1.126	1.3
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	3.58
Recency	29 May 2013	20 April 2017
Chip lithography	28 nm	14 nm
Power consumption (TDP)	49 Watt	50 Watt

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

Radeon 540, on the other hand, has a 0.8% higher aggregate performance score, an age advantage of 3 years, and a 100% more advanced lithography process.

Given the minimal performance differences, no clear winner can be declared between GeForce GT 640 Rev. 2 and Radeon 540.

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