GeForce GT 640 Rev. 2 vs Radeon HD 6550D

Place in the ranking	1094	720
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	0.19
Power efficiency	1.11	5.01
Architecture	TeraScale 2 (2009−2015)	Kepler 2.0 (2013−2015)
GPU code name	Sumo	GK208
Market segment	Desktop	Desktop
Release date	20 June 2011 (13 years ago)	29 May 2013 (11 years ago)
Launch price (MSRP)	no data	$89

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	400	384
Core clock speed	600 MHz	1046 MHz
Number of transistors	1,178 million	915 million
Manufacturing process technology	32 nm	28 nm
Power consumption (TDP)	65 Watt	49 Watt
Texture fill rate	12.00	33.47
Floating-point processing power	0.48 TFLOPS	0.8033 TFLOPS
ROPs	8	8
TMUs	20	32

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	IGP	PCIe 2.0 x8
Length	no data	145 mm
Width	IGP	1-slot
Supplementary power connectors	no data	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	System Shared	GDDR5
Maximum RAM amount	System Shared	1 GB
Memory bus width	System Shared	64 Bit
Memory clock speed	System Shared	1252 MHz
Memory bandwidth	no data	40.06 GB/s
Shared memory	+	-

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	1x DVI, 1x HDMI, 1x VGA
HDMI	-	+

API compatibility

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

DirectX	11.2 (11_0)	12 (11_0)
Shader Model	5.0	5.1
OpenGL	4.4	4.6
OpenCL	1.2	1.2
Vulkan	N/A	1.1.126
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.

Average FPS across all PC games

Here are the average frames per second in a large set of popular games across different resolutions:

Full HD

−225%

65−70
+225%

Cost per frame, $

1080p

no data

1.37

FPS performance in popular games

Full HD
Low Preset

Cyberpunk 2077

3−4
−233%

10−11

+233%

Full HD
Medium Preset

Assassin's Creed Odyssey	5−6 −220%	16−18 +220%
Call of Duty: Modern Warfare	4−5 −200%	12−14 +200%
Cyberpunk 2077	3−4 −233%	10−11 +233%
Far Cry 5	1−2 −200%	3−4 +200%
Far Cry New Dawn	2−3 −200%	6−7 +200%
Forza Horizon 4	0−1	0−1
Hitman 3	5−6 −220%	16−18 +220%
Horizon Zero Dawn	12−14 −208%	40−45 +208%
Red Dead Redemption 2	1−2 −200%	3−4 +200%
Shadow of the Tomb Raider	7−8 −200%	21−24 +200%
Watch Dogs: Legion	30−35 −213%	100−105 +213%

Full HD
High Preset

Assassin's Creed Odyssey	5−6 −220%	16−18 +220%
Call of Duty: Modern Warfare	4−5 −200%	12−14 +200%
Cyberpunk 2077	3−4 −233%	10−11 +233%
Far Cry 5	1−2 −200%	3−4 +200%
Far Cry New Dawn	2−3 −200%	6−7 +200%
Forza Horizon 4	0−1	0−1
Hitman 3	5−6 −220%	16−18 +220%
Horizon Zero Dawn	12−14 −208%	40−45 +208%
Red Dead Redemption 2	1−2 −200%	3−4 +200%
Shadow of the Tomb Raider	7−8 −200%	21−24 +200%
The Witcher 3: Wild Hunt	10−12 −218%	35−40 +218%
Watch Dogs: Legion	30−35 −213%	100−105 +213%

Full HD
Ultra Preset

Assassin's Creed Odyssey	5−6 −220%	16−18 +220%
Call of Duty: Modern Warfare	4−5 −200%	12−14 +200%
Cyberpunk 2077	3−4 −233%	10−11 +233%
Far Cry 5	1−2 −200%	3−4 +200%
Forza Horizon 4	0−1	0−1
Hitman 3	5−6 −220%	16−18 +220%
Horizon Zero Dawn	12−14 −208%	40−45 +208%
Shadow of the Tomb Raider	7−8 −200%	21−24 +200%
The Witcher 3: Wild Hunt	10−12 −218%	35−40 +218%
Watch Dogs: Legion	30−35 −213%	100−105 +213%

Full HD
Epic Preset

Red Dead Redemption 2

1−2

−200%

3−4
+200%

1440p
High Preset

Battlefield 5	1−2 −200%	3−4 +200%
Far Cry New Dawn	1−2 −200%	3−4 +200%

1440p
Ultra Preset

Assassin's Creed Odyssey	1−2 −200%	3−4 +200%
Cyberpunk 2077	1−2 −200%	3−4 +200%
Far Cry 5	1−2 −200%	3−4 +200%
Hitman 3	7−8 −200%	21−24 +200%
Horizon Zero Dawn	4−5 −200%	12−14 +200%
The Witcher 3: Wild Hunt	0−1	0−1
Watch Dogs: Legion	4−5 −200%	12−14 +200%

1440p
Epic Preset

Red Dead Redemption 2

4−5
−200%

12−14

+200%

4K
High Preset

Far Cry New Dawn

0−1

4K
Ultra Preset

Assassin's Creed Odyssey	1−2 −200%	3−4 +200%
Assassin's Creed Valhalla	0−1	0−1
Call of Duty: Modern Warfare	0−1	0−1
Far Cry 5	0−1	0−1

4K
Epic Preset

Red Dead Redemption 2

2−3

−200%

6−7
+200%

This is how HD 6550D and GT 640 Rev. 2 compete in popular games:

GT 640 Rev. 2 is 225% faster in 1080p

Pros & cons summary

Performance score	1.04	3.55
Recency	20 June 2011	29 May 2013
Chip lithography	32 nm	28 nm
Power consumption (TDP)	65 Watt	49 Watt

GT 640 Rev. 2 has a 241.3% higher aggregate performance score, an age advantage of 1 year, a 14.3% more advanced lithography process, and 32.7% lower power consumption.

The GeForce GT 640 Rev. 2 is our recommended choice as it beats the Radeon HD 6550D in performance tests.

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