GeForce GT 640 Rev. 2 vs Radeon HD 7660G
Aggregate performance score
We've compared Radeon HD 7660G and GeForce GT 640 Rev. 2, covering specs and all relevant benchmarks.
GT 640 Rev. 2 outperforms HD 7660G by a whopping 189% based on our aggregate benchmark results.
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 1037 | 717 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 0.19 |
| Power efficiency | 2.43 | 5.02 |
| Architecture | TeraScale 3 (2010−2013) | Kepler 2.0 (2013−2015) |
| GPU code name | Devastator | GK208 |
| Market segment | Desktop | Desktop |
| Release date | 15 May 2012 (12 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.
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 | 686 MHz | 1046 MHz |
| Boost clock speed | 686 MHz | no data |
| Number of transistors | 1,303 million | 915 million |
| Manufacturing process technology | 32 nm | 28 nm |
| Power consumption (TDP) | 35 Watt | 49 Watt |
| Texture fill rate | 16.46 | 33.47 |
| Floating-point processing power | 0.5268 TFLOPS | 0.8033 TFLOPS |
| ROPs | 8 | 8 |
| TMUs | 24 | 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:
| 900p | 11
−173%
| 30−35
+173%
|
| Full HD | 15
−167%
| 40−45
+167%
|
| 1200p | 9
−167%
| 24−27
+167%
|
Cost per frame, $
| 1080p | no data | 2.23 |
FPS performance in popular games
Full HD
Low Preset
| Cyberpunk 2077 | 3−4
−167%
|
8−9
+167%
|
Full HD
Medium Preset
| Assassin's Creed Odyssey | 6−7
−167%
|
16−18
+167%
|
| Call of Duty: Modern Warfare | 4−5
−150%
|
10−11
+150%
|
| Cyberpunk 2077 | 3−4
−167%
|
8−9
+167%
|
| Far Cry 5 | 1−2
−100%
|
2−3
+100%
|
| Far Cry New Dawn | 3−4
−167%
|
8−9
+167%
|
| Forza Horizon 4 | 2−3
−150%
|
5−6
+150%
|
| Hitman 3 | 6−7
−167%
|
16−18
+167%
|
| Horizon Zero Dawn | 14−16
−186%
|
40−45
+186%
|
| Red Dead Redemption 2 | 2−3
−150%
|
5−6
+150%
|
| Shadow of the Tomb Raider | 8−9
−163%
|
21−24
+163%
|
| Watch Dogs: Legion | 30−35
−188%
|
95−100
+188%
|
Full HD
High Preset
| Assassin's Creed Odyssey | 6−7
−167%
|
16−18
+167%
|
| Call of Duty: Modern Warfare | 4−5
−150%
|
10−11
+150%
|
| Cyberpunk 2077 | 3−4
−167%
|
8−9
+167%
|
| Far Cry 5 | 1−2
−100%
|
2−3
+100%
|
| Far Cry New Dawn | 3−4
−167%
|
8−9
+167%
|
| Forza Horizon 4 | 2−3
−150%
|
5−6
+150%
|
| Hitman 3 | 6−7
−167%
|
16−18
+167%
|
| Horizon Zero Dawn | 14−16
−186%
|
40−45
+186%
|
| Red Dead Redemption 2 | 2−3
−150%
|
5−6
+150%
|
| Shadow of the Tomb Raider | 8−9
−163%
|
21−24
+163%
|
| The Witcher 3: Wild Hunt | 10−12
−173%
|
30−33
+173%
|
| Watch Dogs: Legion | 30−35
−188%
|
95−100
+188%
|
Full HD
Ultra Preset
| Assassin's Creed Odyssey | 6−7
−167%
|
16−18
+167%
|
| Call of Duty: Modern Warfare | 4−5
−150%
|
10−11
+150%
|
| Cyberpunk 2077 | 3−4
−167%
|
8−9
+167%
|
| Far Cry 5 | 1−2
−100%
|
2−3
+100%
|
| Forza Horizon 4 | 2−3
−150%
|
5−6
+150%
|
| Hitman 3 | 6−7
−167%
|
16−18
+167%
|
| Horizon Zero Dawn | 14−16
−186%
|
40−45
+186%
|
| Shadow of the Tomb Raider | 8−9
−163%
|
21−24
+163%
|
| The Witcher 3: Wild Hunt | 10−12
−173%
|
30−33
+173%
|
| Watch Dogs: Legion | 30−35
−188%
|
95−100
+188%
|
Full HD
Epic Preset
| Red Dead Redemption 2 | 2−3
−150%
|
5−6
+150%
|
1440p
High Preset
| Battlefield 5 | 1−2
−100%
|
2−3
+100%
|
| Far Cry New Dawn | 2−3
−150%
|
5−6
+150%
|
1440p
Ultra Preset
| Assassin's Creed Odyssey | 1−2
−100%
|
2−3
+100%
|
| Call of Duty: Modern Warfare | 0−1 | 0−1 |
| Cyberpunk 2077 | 1−2
−100%
|
2−3
+100%
|
| Far Cry 5 | 1−2
−100%
|
2−3
+100%
|
| Hitman 3 | 7−8
−157%
|
18−20
+157%
|
| Horizon Zero Dawn | 4−5
−150%
|
10−11
+150%
|
| The Witcher 3: Wild Hunt | 0−1 | 0−1 |
| Watch Dogs: Legion | 6−7
−167%
|
16−18
+167%
|
1440p
Epic Preset
| Red Dead Redemption 2 | 4−5
−150%
|
10−11
+150%
|
4K
High Preset
| Far Cry New Dawn | 0−1 | 0−1 |
4K
Ultra Preset
| Assassin's Creed Odyssey | 1−2
−100%
|
2−3
+100%
|
| Assassin's Creed Valhalla | 1−2
−100%
|
2−3
+100%
|
| Call of Duty: Modern Warfare | 0−1 | 0−1 |
| Far Cry 5 | 0−1 | 0−1 |
4K
Epic Preset
| Red Dead Redemption 2 | 3−4
−167%
|
8−9
+167%
|
This is how HD 7660G and GT 640 Rev. 2 compete in popular games:
- GT 640 Rev. 2 is 173% faster in 900p
- GT 640 Rev. 2 is 167% faster in 1080p
- GT 640 Rev. 2 is 167% faster in 1200p
Pros & cons summary
| Performance score | 1.23 | 3.55 |
| Recency | 15 May 2012 | 29 May 2013 |
| Chip lithography | 32 nm | 28 nm |
| Power consumption (TDP) | 35 Watt | 49 Watt |
HD 7660G has 40% lower power consumption.
GT 640 Rev. 2, on the other hand, has a 188.6% higher aggregate performance score, an age advantage of 1 year, and a 14.3% more advanced lithography process.
The GeForce GT 640 Rev. 2 is our recommended choice as it beats the Radeon HD 7660G in performance tests.
Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.
Comparisons with similar GPUs
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