Radeon RX 6600 XT vs GeForce GT 640 Rev. 2

GT 610 GT 610 PCI GT 620 GT 625 OEM GT 630 GT 630 OEM GT 635 OEM GT 640 GT 640 OEM GT 640 OEM Rebrand GT 640 Rev. 2 GT 645 OEM
VS
Radeon RX 6400 Radeon RX 6500 XT Radeon RX 6600 Radeon RX 6600 LE Radeon RX 6600 XT Radeon RX 6650 XT Radeon RX 6700 XT Radeon RX 6750 XT Radeon RX 6800 Radeon RX 6800 XT Radeon RX 6900 XT Radeon RX 6950 XT

Aggregate performance score

We've compared GeForce GT 640 Rev. 2 and Radeon RX 6600 XT, covering specs and all relevant benchmarks.

GT 640 Rev. 2
2013
1 GB GDDR5, 49 Watt
3.55

RX 6600 XT outperforms GT 640 Rev. 2 by a whopping 1106% based on our aggregate benchmark results.

Contents

GT 640 Rev. 2 GT 640 Rev. 2
RX 6600 XT RX 6600 XT

Primary details

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

Place in the ranking72290
Place by popularitynot in top-10087
Cost-effectiveness evaluation0.1963.38
Power efficiency5.0518.65
ArchitectureKepler 2.0 (2013−2015)RDNA 2.0 (2020−2024)
GPU code nameGK208Navi 23
Market segmentDesktopDesktop
Release date29 May 2013 (11 years ago)30 July 2021 (3 years ago)
Launch price (MSRP)$89 $379

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

RX 6600 XT has 33258% better value for money than GT 640 Rev. 2.

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 cores3842048
Core clock speed1046 MHz1968 MHz
Boost clock speedno data2589 MHz
Number of transistors915 million11,060 million
Manufacturing process technology28 nm7 nm
Power consumption (TDP)49 Watt160 Watt
Texture fill rate33.47331.4
Floating-point processing power0.8033 TFLOPS10.6 TFLOPS
ROPs864
TMUs32128
Ray Tracing Coresno data32

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).

InterfacePCIe 2.0 x8PCIe 4.0 x8
Length145 mm190 mm
Width1-slot2-slot
Supplementary power connectorsNone1x 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 typeGDDR5GDDR6
Maximum RAM amount1 GB8 GB
Memory bus width64 Bit128 Bit
Memory clock speed1252 MHz2000 MHz
Memory bandwidth40.06 GB/s256.0 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 Connectors1x DVI, 1x HDMI, 1x VGA1x HDMI, 2x DisplayPort
HDMI++

API compatibility

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

DirectX12 (11_0)12.0 Ultimate (12_2)
Shader Model5.16.5
OpenGL4.64.6
OpenCL1.22.1
Vulkan1.1.1261.2
CUDA3.5-

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 HD10−12
−1250%
135
+1250%
1440p6−7
−1183%
77
+1183%
4K3−4
−1333%
43
+1333%

Cost per frame, $

1080p8.902.81
1440p14.834.92
4K29.678.81

FPS performance in popular games

Full HD
Low Preset

Cyberpunk 2077 79
+0%
79
+0%

Full HD
Medium Preset

Assassin's Creed Odyssey 90−95
+0%
90−95
+0%
Assassin's Creed Valhalla 129
+0%
129
+0%
Battlefield 5 130−140
+0%
130−140
+0%
Call of Duty: Modern Warfare 85−90
+0%
85−90
+0%
Cyberpunk 2077 78
+0%
78
+0%
Far Cry 5 90−95
+0%
90−95
+0%
Far Cry New Dawn 100−110
+0%
100−110
+0%
Forza Horizon 4 190−200
+0%
190−200
+0%
Hitman 3 108
+0%
108
+0%
Horizon Zero Dawn 170−180
+0%
170−180
+0%
Metro Exodus 130−140
+0%
130−140
+0%
Red Dead Redemption 2 95−100
+0%
95−100
+0%
Shadow of the Tomb Raider 150−160
+0%
150−160
+0%
Watch Dogs: Legion 130−140
+0%
130−140
+0%

Full HD
High Preset

Assassin's Creed Odyssey 90−95
+0%
90−95
+0%
Assassin's Creed Valhalla 106
+0%
106
+0%
Battlefield 5 130−140
+0%
130−140
+0%
Call of Duty: Modern Warfare 85−90
+0%
85−90
+0%
Cyberpunk 2077 76
+0%
76
+0%
Far Cry 5 90−95
+0%
90−95
+0%
Far Cry New Dawn 100−110
+0%
100−110
+0%
Forza Horizon 4 190−200
+0%
190−200
+0%
Hitman 3 108
+0%
108
+0%
Horizon Zero Dawn 170−180
+0%
170−180
+0%
Metro Exodus 130−140
+0%
130−140
+0%
Red Dead Redemption 2 95−100
+0%
95−100
+0%
Shadow of the Tomb Raider 209
+0%
209
+0%
The Witcher 3: Wild Hunt 85−90
+0%
85−90
+0%
Watch Dogs: Legion 130−140
+0%
130−140
+0%

Full HD
Ultra Preset

Assassin's Creed Odyssey 90−95
+0%
90−95
+0%
Assassin's Creed Valhalla 75
+0%
75
+0%
Call of Duty: Modern Warfare 85−90
+0%
85−90
+0%
Cyberpunk 2077 69
+0%
69
+0%
Far Cry 5 90−95
+0%
90−95
+0%
Forza Horizon 4 190−200
+0%
190−200
+0%
Hitman 3 100
+0%
100
+0%
Horizon Zero Dawn 157
+0%
157
+0%
Shadow of the Tomb Raider 183
+0%
183
+0%
The Witcher 3: Wild Hunt 99
+0%
99
+0%
Watch Dogs: Legion 61
+0%
61
+0%

Full HD
Epic Preset

Red Dead Redemption 2 95−100
+0%
95−100
+0%

1440p
High Preset

Battlefield 5 80−85
+0%
80−85
+0%
Far Cry New Dawn 65−70
+0%
65−70
+0%

1440p
Ultra Preset

Assassin's Creed Odyssey 45−50
+0%
45−50
+0%
Assassin's Creed Valhalla 56
+0%
56
+0%
Call of Duty: Modern Warfare 50−55
+0%
50−55
+0%
Cyberpunk 2077 40
+0%
40
+0%
Far Cry 5 45−50
+0%
45−50
+0%
Forza Horizon 4 230−240
+0%
230−240
+0%
Hitman 3 67
+0%
67
+0%
Horizon Zero Dawn 116
+0%
116
+0%
Metro Exodus 98
+0%
98
+0%
Shadow of the Tomb Raider 118
+0%
118
+0%
The Witcher 3: Wild Hunt 60−65
+0%
60−65
+0%
Watch Dogs: Legion 200−210
+0%
200−210
+0%

1440p
Epic Preset

Red Dead Redemption 2 70−75
+0%
70−75
+0%

4K
High Preset

Battlefield 5 40−45
+0%
40−45
+0%
Far Cry New Dawn 35−40
+0%
35−40
+0%
Hitman 3 33
+0%
33
+0%
Horizon Zero Dawn 190−200
+0%
190−200
+0%
Metro Exodus 55−60
+0%
55−60
+0%
The Witcher 3: Wild Hunt 54
+0%
54
+0%

4K
Ultra Preset

Assassin's Creed Odyssey 30−33
+0%
30−33
+0%
Assassin's Creed Valhalla 28
+0%
28
+0%
Call of Duty: Modern Warfare 27−30
+0%
27−30
+0%
Cyberpunk 2077 14
+0%
14
+0%
Far Cry 5 24−27
+0%
24−27
+0%
Forza Horizon 4 60−65
+0%
60−65
+0%
Shadow of the Tomb Raider 61
+0%
61
+0%
Watch Dogs: Legion 24
+0%
24
+0%

4K
Epic Preset

Red Dead Redemption 2 35−40
+0%
35−40
+0%

This is how GT 640 Rev. 2 and RX 6600 XT compete in popular games:

  • RX 6600 XT is 1250% faster in 1080p
  • RX 6600 XT is 1183% faster in 1440p
  • RX 6600 XT is 1333% faster in 4K

All in all, in popular games:

  • there's a draw in 72 tests (100%)

Pros & cons summary

Performance score 3.55 42.80
Recency 29 May 2013 30 July 2021
Maximum RAM amount 1 GB 8 GB
Chip lithography 28 nm 7 nm
Power consumption (TDP) 49 Watt 160 Watt

GT 640 Rev. 2 has 226.5% lower power consumption.

RX 6600 XT, on the other hand, has a 1105.6% higher aggregate performance score, an age advantage of 8 years, a 700% higher maximum VRAM amount, and a 300% more advanced lithography process.

The Radeon RX 6600 XT 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.

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 GT 640 Rev. 2
GeForce GT 640 Rev. 2
AMD Radeon RX 6600 XT
Radeon RX 6600 XT
Like
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Comparisons with similar GPUs

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

GT 640 Rev. 2 GeForce GT 640 Rev. 2
vs
ATI HD 4870 Radeon HD 4870
RX 6600 XT Radeon RX 6600 XT
vs
RTX 2060 Super GeForce RTX 2060 Super
GT 640 Rev. 2 GeForce GT 640 Rev. 2
vs
Radeon 540 Radeon 540
GT 640 Rev. 2 GeForce GT 640 Rev. 2
vs
GTX 1170 GeForce GTX 1170
GT 640 Rev. 2 GeForce GT 640 Rev. 2
vs
GK107 GK107
GT 640 Rev. 2 GeForce GT 640 Rev. 2
vs
Gemini Lake GT1.5 Gemini Lake GT1.5
GT 640 Rev. 2 GeForce GT 640 Rev. 2
vs
RTX 2060 Super GeForce RTX 2060 Super
GT 640 Rev. 2 GeForce GT 640 Rev. 2
vs
RX Vega 7 Radeon RX Vega 7
GT 640 Rev. 2 GeForce GT 640 Rev. 2
vs
RTX 3050 4 GB GeForce RTX 3050 4 GB
GT 640 Rev. 2 GeForce GT 640 Rev. 2
vs
RX 6700S Radeon RX 6700S
GT 640 Rev. 2 GeForce GT 640 Rev. 2
vs
Radeon 610M Radeon 610M
GT 640 Rev. 2 GeForce GT 640 Rev. 2
vs
RTX 4090 Mobile GeForce RTX 4090 Mobile
GTX 780 GeForce GTX 780
vs
GTX 970M SLI GeForce GTX 970M SLI

Community ratings

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

3.9 26 votes

Rate GeForce GT 640 Rev. 2 on a scale of 1 to 5:

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4.3 4238 votes

Rate Radeon RX 6600 XT on a scale of 1 to 5:

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Questions & comments

Here you can ask a question about this comparison, agree or disagree with our judgements, or report an error or mismatch.