GeForce GT 640 Rev. 2 vs GTX 680M
Aggregate performance score
We've compared GeForce GTX 680M with GeForce GT 640 Rev. 2, including specs and performance data.
GTX 680M outperforms GT 640 Rev. 2 by a whopping 136% based on our aggregate benchmark results.
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 498 | 717 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 3.45 | 0.19 |
| Power efficiency | 6.04 | 5.23 |
| Architecture | Kepler (2012−2018) | Kepler 2.0 (2013−2015) |
| GPU code name | GK104 | GK208 |
| Market segment | Laptop | Desktop |
| Release date | 4 June 2012 (12 years ago) | 29 May 2013 (11 years ago) |
| Launch price (MSRP) | $310.50 | $89 |
Cost-effectiveness evaluation
Performance to price ratio. The higher, the better.
GTX 680M has 1716% 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 cores | 1344 | 384 |
| Core clock speed | 719 MHz | 1046 MHz |
| Boost clock speed | 758 MHz | no data |
| Number of transistors | 3,540 million | 915 million |
| Manufacturing process technology | 28 nm | 28 nm |
| Power consumption (TDP) | 100 Watt | 49 Watt |
| Texture fill rate | 84.90 | 33.47 |
| Floating-point processing power | 2.038 TFLOPS | 0.8033 TFLOPS |
| ROPs | 32 | 8 |
| TMUs | 112 | 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).
| Laptop size | large | no data |
| Bus support | PCI Express 3.0 | no data |
| Interface | MXM-B (3.0) | PCIe 2.0 x8 |
| Length | no data | 145 mm |
| Width | no data | 1-slot |
| Supplementary power connectors | None | None |
| SLI options | + | - |
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 | 4 GB | 1 GB |
| Memory bus width | 256 Bit | 64 Bit |
| Memory clock speed | 1800 MHz | 1252 MHz |
| Memory bandwidth | 115.2 GB/s | 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 | - | + |
Supported technologies
Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.
| Optimus | + | - |
API compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 API | 12 (11_0) |
| Shader Model | 5.1 | 5.1 |
| OpenGL | 4.5 | 4.6 |
| OpenCL | 1.1 | 1.2 |
| Vulkan | 1.1.126 | 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 | 67
+148%
| 27−30
−148%
|
| Full HD | 61
+154%
| 24−27
−154%
|
FPS performance in popular games
Full HD
Low Preset
| Cyberpunk 2077 | 12−14
+160%
|
5−6
−160%
|
Full HD
Medium Preset
| Assassin's Creed Odyssey | 20−22
+150%
|
8−9
−150%
|
| Assassin's Creed Valhalla | 12−14
+140%
|
5−6
−140%
|
| Battlefield 5 | 24−27
+150%
|
10−11
−150%
|
| Call of Duty: Modern Warfare | 16−18
+143%
|
7−8
−143%
|
| Cyberpunk 2077 | 12−14
+160%
|
5−6
−160%
|
| Far Cry 5 | 18−20
+138%
|
8−9
−138%
|
| Far Cry New Dawn | 21−24
+156%
|
9−10
−156%
|
| Forza Horizon 4 | 55−60
+162%
|
21−24
−162%
|
| Hitman 3 | 16−18
+167%
|
6−7
−167%
|
| Horizon Zero Dawn | 45−50
+161%
|
18−20
−161%
|
| Metro Exodus | 24−27
+150%
|
10−11
−150%
|
| Red Dead Redemption 2 | 21−24
+156%
|
9−10
−156%
|
| Shadow of the Tomb Raider | 27−30
+180%
|
10−11
−180%
|
| Watch Dogs: Legion | 55−60
+142%
|
24−27
−142%
|
Full HD
High Preset
| Assassin's Creed Odyssey | 20−22
+150%
|
8−9
−150%
|
| Assassin's Creed Valhalla | 12−14
+140%
|
5−6
−140%
|
| Battlefield 5 | 24−27
+150%
|
10−11
−150%
|
| Call of Duty: Modern Warfare | 16−18
+143%
|
7−8
−143%
|
| Cyberpunk 2077 | 12−14
+160%
|
5−6
−160%
|
| Far Cry 5 | 18−20
+138%
|
8−9
−138%
|
| Far Cry New Dawn | 21−24
+156%
|
9−10
−156%
|
| Forza Horizon 4 | 55−60
+162%
|
21−24
−162%
|
| Hitman 3 | 16−18
+167%
|
6−7
−167%
|
| Horizon Zero Dawn | 45−50
+161%
|
18−20
−161%
|
| Metro Exodus | 24−27
+150%
|
10−11
−150%
|
| Red Dead Redemption 2 | 21−24
+156%
|
9−10
−156%
|
| Shadow of the Tomb Raider | 27−30
+180%
|
10−11
−180%
|
| The Witcher 3: Wild Hunt | 24−27
+140%
|
10−11
−140%
|
| Watch Dogs: Legion | 55−60
+142%
|
24−27
−142%
|
Full HD
Ultra Preset
| Assassin's Creed Odyssey | 20−22
+150%
|
8−9
−150%
|
| Assassin's Creed Valhalla | 12−14
+140%
|
5−6
−140%
|
| Call of Duty: Modern Warfare | 16−18
+143%
|
7−8
−143%
|
| Cyberpunk 2077 | 12−14
+160%
|
5−6
−160%
|
| Far Cry 5 | 18−20
+138%
|
8−9
−138%
|
| Forza Horizon 4 | 55−60
+162%
|
21−24
−162%
|
| Hitman 3 | 16−18
+167%
|
6−7
−167%
|
| Horizon Zero Dawn | 45−50
+161%
|
18−20
−161%
|
| Shadow of the Tomb Raider | 27−30
+180%
|
10−11
−180%
|
| The Witcher 3: Wild Hunt | 24−27
+140%
|
10−11
−140%
|
| Watch Dogs: Legion | 55−60
+142%
|
24−27
−142%
|
Full HD
Epic Preset
| Red Dead Redemption 2 | 21−24
+156%
|
9−10
−156%
|
1440p
High Preset
| Battlefield 5 | 16−18
+167%
|
6−7
−167%
|
| Far Cry New Dawn | 12−14
+160%
|
5−6
−160%
|
1440p
Ultra Preset
| Assassin's Creed Odyssey | 8−9
+167%
|
3−4
−167%
|
| Assassin's Creed Valhalla | 4−5
+300%
|
1−2
−300%
|
| Call of Duty: Modern Warfare | 8−9
+167%
|
3−4
−167%
|
| Cyberpunk 2077 | 4−5
+300%
|
1−2
−300%
|
| Far Cry 5 | 10−11
+150%
|
4−5
−150%
|
| Forza Horizon 4 | 30−35
+175%
|
12−14
−175%
|
| Hitman 3 | 12−14
+140%
|
5−6
−140%
|
| Horizon Zero Dawn | 16−18
+143%
|
7−8
−143%
|
| Metro Exodus | 10−12
+175%
|
4−5
−175%
|
| Shadow of the Tomb Raider | 8−9
+167%
|
3−4
−167%
|
| The Witcher 3: Wild Hunt | 8−9
+167%
|
3−4
−167%
|
| Watch Dogs: Legion | 50−55
+152%
|
21−24
−152%
|
1440p
Epic Preset
| Red Dead Redemption 2 | 14−16
+180%
|
5−6
−180%
|
4K
High Preset
| Battlefield 5 | 7−8
+250%
|
2−3
−250%
|
| Far Cry New Dawn | 6−7
+200%
|
2−3
−200%
|
| Hitman 3 | 4−5
+300%
|
1−2
−300%
|
| Horizon Zero Dawn | 30−35
+158%
|
12−14
−158%
|
| Metro Exodus | 6−7
+200%
|
2−3
−200%
|
| The Witcher 3: Wild Hunt | 5−6
+150%
|
2−3
−150%
|
4K
Ultra Preset
| Assassin's Creed Odyssey | 5−6
+150%
|
2−3
−150%
|
| Assassin's Creed Valhalla | 4−5
+300%
|
1−2
−300%
|
| Call of Duty: Modern Warfare | 4−5
+300%
|
1−2
−300%
|
| Cyberpunk 2077 | 1−2 | 0−1 |
| Far Cry 5 | 4−5
+300%
|
1−2
−300%
|
| Forza Horizon 4 | 10−11
+150%
|
4−5
−150%
|
| Shadow of the Tomb Raider | 4−5
+300%
|
1−2
−300%
|
| Watch Dogs: Legion | 3−4
+200%
|
1−2
−200%
|
4K
Epic Preset
| Red Dead Redemption 2 | 8−9
+167%
|
3−4
−167%
|
This is how GTX 680M and GT 640 Rev. 2 compete in popular games:
- GTX 680M is 148% faster in 900p
- GTX 680M is 154% faster in 1080p
Pros & cons summary
| Performance score | 8.37 | 3.55 |
| Recency | 4 June 2012 | 29 May 2013 |
| Maximum RAM amount | 4 GB | 1 GB |
| Power consumption (TDP) | 100 Watt | 49 Watt |
GTX 680M has a 135.8% higher aggregate performance score, and a 300% higher maximum VRAM amount.
GT 640 Rev. 2, on the other hand, has an age advantage of 11 months, and 104.1% lower power consumption.
The GeForce GTX 680M is our recommended choice as it beats the GeForce GT 640 Rev. 2 in performance tests.
Be aware that GeForce GTX 680M is a notebook card while GeForce GT 640 Rev. 2 is a desktop one.
Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.
Comparisons with similar GPUs
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
