Radeon RX 640 vs GeForce GTX 660 OEM

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GTX 660 OEM GTX 660 Rev. 2 GTX 660 Ti GTX 670 GTX 680 GTX 680 Mac Edition GTX 690 GTX 760 GTX 760 OEM GTX 760 Ti OEM GTX 760 X2 GTX 770
VS
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Radeon 550X Mobile Radeon 630 Radeon RX 540X Radeon RX 550X Mobile Radeon RX 640

Aggregate performance score

We've compared GeForce GTX 660 OEM with Radeon RX 640, including specs and performance data.

GTX 660 OEM
2012
2 GB GDDR5, 130 Watt
3.23

RX 640 outperforms GTX 660 OEM by an impressive 61% based on our aggregate benchmark results.

Contents

GTX 660 OEM GTX 660 OEM
RX 640 RX 640

Primary details

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

Place in the ranking744622
Place by popularitynot in top-100not in top-100
Power efficiency1.787.46
ArchitectureKepler (2012−2018)GCN 4.0 (2016−2020)
GPU code nameGK104Polaris 23
Market segmentDesktopLaptop
Release date22 August 2012 (12 years ago)13 May 2019 (5 years ago)

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 cores1152640
Core clock speed823 MHz1082 MHz
Boost clock speed888 MHz1218 MHz
Number of transistors3,540 million2,200 million
Manufacturing process technology28 nm14 nm
Power consumption (TDP)130 Watt50 Watt
Texture fill rate85.2548.72
Floating-point processing power2.046 TFLOPS1.559 TFLOPS
ROPs3216
TMUs9640

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).

Laptop sizeno datalarge
InterfacePCIe 3.0 x16PCIe 3.0 x8
Length241 mmno data
Width2-slotno data
Supplementary power connectors1x 6-pinNone

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 typeGDDR5GDDR5
Maximum RAM amount2 GB2 GB
Memory bus width256 Bit64 Bit
Memory clock speed1400 MHz1500 MHz
Memory bandwidth179.2 GB/s48 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 Connectors2x DVI, 1x HDMI, 1x DisplayPortNo outputs
HDMI+-

Supported technologies

Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.

FreeSync-+

API and SDK compatibility

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

DirectX12 (11_0)12 (12_0)
Shader Model5.16.4
OpenGL4.64.6
OpenCL1.22.0
Vulkan1.1.1261.2.131
CUDA3.0-

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 HD16−18
−62.5%
26
+62.5%

FPS performance in popular games

Full HD
Low Preset

Counter-Strike 2 10−12
+0%
10−12
+0%
Cyberpunk 2077 10−12
+0%
10−12
+0%

Full HD
Medium Preset

Battlefield 5 16−18
+0%
16−18
+0%
Counter-Strike 2 10−12
+0%
10−12
+0%
Cyberpunk 2077 10−12
+0%
10−12
+0%
Forza Horizon 4 21−24
+0%
21−24
+0%
Forza Horizon 5 10−12
+0%
10−12
+0%
Metro Exodus 17
+0%
17
+0%
Red Dead Redemption 2 26
+0%
26
+0%
Valorant 16−18
+0%
16−18
+0%

Full HD
High Preset

Battlefield 5 16−18
+0%
16−18
+0%
Counter-Strike 2 10−12
+0%
10−12
+0%
Cyberpunk 2077 10−12
+0%
10−12
+0%
Dota 2 18
+0%
18
+0%
Far Cry 5 30
+0%
30
+0%
Fortnite 30−35
+0%
30−35
+0%
Forza Horizon 4 21−24
+0%
21−24
+0%
Forza Horizon 5 10−12
+0%
10−12
+0%
Grand Theft Auto V 18−20
+0%
18−20
+0%
Metro Exodus 12−14
+0%
12−14
+0%
PLAYERUNKNOWN'S BATTLEGROUNDS 45−50
+0%
45−50
+0%
Red Dead Redemption 2 16−18
+0%
16−18
+0%
The Witcher 3: Wild Hunt 16−18
+0%
16−18
+0%
Valorant 16−18
+0%
16−18
+0%
World of Tanks 85−90
+0%
85−90
+0%

Full HD
Ultra Preset

Battlefield 5 16−18
+0%
16−18
+0%
Counter-Strike 2 10−12
+0%
10−12
+0%
Cyberpunk 2077 10−12
+0%
10−12
+0%
Dota 2 49
+0%
49
+0%
Far Cry 5 24−27
+0%
24−27
+0%
Forza Horizon 4 21−24
+0%
21−24
+0%
Forza Horizon 5 10−12
+0%
10−12
+0%
PLAYERUNKNOWN'S BATTLEGROUNDS 45−50
+0%
45−50
+0%
Valorant 16−18
+0%
16−18
+0%

1440p
High Preset

Dota 2 5−6
+0%
5−6
+0%
Grand Theft Auto V 6−7
+0%
6−7
+0%
PLAYERUNKNOWN'S BATTLEGROUNDS 30−35
+0%
30−35
+0%
Red Dead Redemption 2 4−5
+0%
4−5
+0%
World of Tanks 35−40
+0%
35−40
+0%

1440p
Ultra Preset

Battlefield 5 8−9
+0%
8−9
+0%
Cyberpunk 2077 5−6
+0%
5−6
+0%
Far Cry 5 10−12
+0%
10−12
+0%
Forza Horizon 4 9−10
+0%
9−10
+0%
Forza Horizon 5 7−8
+0%
7−8
+0%
Metro Exodus 5−6
+0%
5−6
+0%
The Witcher 3: Wild Hunt 8−9
+0%
8−9
+0%
Valorant 14−16
+0%
14−16
+0%

4K
High Preset

Dota 2 16−18
+0%
16−18
+0%
Grand Theft Auto V 16−18
+0%
16−18
+0%
PLAYERUNKNOWN'S BATTLEGROUNDS 14−16
+0%
14−16
+0%
Red Dead Redemption 2 3−4
+0%
3−4
+0%
The Witcher 3: Wild Hunt 16−18
+0%
16−18
+0%

4K
Ultra Preset

Battlefield 5 4−5
+0%
4−5
+0%
Cyberpunk 2077 2−3
+0%
2−3
+0%
Dota 2 16−18
+0%
16−18
+0%
Far Cry 5 6−7
+0%
6−7
+0%
Fortnite 5−6
+0%
5−6
+0%
Forza Horizon 4 5−6
+0%
5−6
+0%
Forza Horizon 5 3−4
+0%
3−4
+0%
Valorant 5−6
+0%
5−6
+0%

This is how GTX 660 OEM and RX 640 compete in popular games:

  • RX 640 is 63% faster in 1080p

All in all, in popular games:

  • there's a draw in 60 tests (100%)

Pros & cons summary

Performance score 3.23 5.20
Recency 22 August 2012 13 May 2019
Chip lithography 28 nm 14 nm
Power consumption (TDP) 130 Watt 50 Watt

RX 640 has a 61% higher aggregate performance score, an age advantage of 6 years, a 100% more advanced lithography process, and 160% lower power consumption.

The Radeon RX 640 is our recommended choice as it beats the GeForce GTX 660 OEM in performance tests.

Be aware that GeForce GTX 660 OEM is a desktop card while Radeon RX 640 is a notebook one.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite graphics card.

NVIDIA GeForce GTX 660 OEM
GeForce GTX 660 OEM
AMD Radeon RX 640
Radeon RX 640
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Other comparisons

We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.

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GTX 660 Ti 660 Ti
GTX 660 OEM GTX 660 OEM
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GTX 660 OEM GTX 660 OEM
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9500 GT 9500 GT
9400 GT Rev. 3 9400 GT Rev. 3
vs
UHD Graphics 610 UHD Graphics 610
GT 640 GT 640
vs
GT 610 PCI GT 610 PCI
GT 640 GT 640
vs
Quadro GV100 GV100
GT 620 GT 620
vs
R5 A240 R5 A240
GT 620 GT 620
vs
GTX 1650 TU116 GTX 1650 TU116

Community ratings

Here you can see the user ratings of the compared graphics cards, as well as rate them yourself.

3.8 34 votes

Rate GeForce GTX 660 OEM on a scale of 1 to 5:

  • 1
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  • 5
3.2 262 votes

Rate Radeon RX 640 on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

Questions & comments

Here you can give us your opinion about GeForce GTX 660 OEM or Radeon RX 640, agree or disagree with our ratings, or report errors or inaccuracies on the site.