GeForce GT 640 OEM vs Radeon HD 7770M
Aggregate performance score
We've compared Radeon HD 7770M with GeForce GT 640 OEM, including specs and performance data.
HD 7770M outperforms GT 640 OEM by a whopping 102% based on our aggregate benchmark results.
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in performance ranking | 726 | 934 |
| Place by popularity | not in top-100 | not in top-100 |
| Architecture | GCN (2011−2017) | Kepler (2012−2018) |
| GPU code name | Chelsea XT | GK107 |
| Market segment | Laptop | Desktop |
| Release date | 24 April 2012 (12 years ago) | 24 April 2012 (12 years ago) |
Detailed specifications
General performance parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. These parameters indirectly speak of performance, but for precise assessment you have to consider their benchmark and gaming test results. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.
| Pipelines / CUDA cores | 512 | 384 |
| Core clock speed | 675 MHz | 797 MHz |
| Number of transistors | 1,500 million | 1,270 million |
| Manufacturing process technology | 28 nm | 28 nm |
| Power consumption (TDP) | 32 Watt | 50 Watt |
| Texture fill rate | 21.60 | 25.50 |
| Floating-point performance | 0.6912 gflops | 0.6121 gflops |
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 | medium sized | no data |
| Interface | PCIe 2.0 x16 | PCIe 3.0 x16 |
| Length | no data | 145 mm |
| Width | no data | 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 | GDDR5 | DDR3 |
| Maximum RAM amount | 1 GB | 2 GB |
| Memory bus width | 128 Bit | 128 Bit |
| Memory clock speed | 4000 MHz | 1782 MHz |
| Memory bandwidth | 64 GB/s | 28.51 GB/s |
| Shared memory | - | no data |
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 DisplayPort |
| HDMI | - | + |
API compatibility
List of supported graphics and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (11_1) | 12 (11_0) |
| Shader Model | 5.1 | 5.1 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | 1.2.131 | 1.1.126 |
| CUDA | - | 3.0 |
Gaming performance
Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.
FPS performance in popular games
Full HD
Low Preset
| Cyberpunk 2077 | 6−7
+200%
|
2−3
−200%
|
Full HD
Medium Preset
| Assassin's Creed Odyssey | 10−11
+150%
|
4−5
−150%
|
| Assassin's Creed Valhalla | 2−3 | 0−1 |
| Battlefield 5 | 7−8
+133%
|
3−4
−133%
|
| Call of Duty: Modern Warfare | 8−9
+167%
|
3−4
−167%
|
| Cyberpunk 2077 | 6−7
+200%
|
2−3
−200%
|
| Far Cry 5 | 7−8
+133%
|
3−4
−133%
|
| Far Cry New Dawn | 10−11
+150%
|
4−5
−150%
|
| Forza Horizon 4 | 20−22
+122%
|
9−10
−122%
|
| Hitman 3 | 9−10
+125%
|
4−5
−125%
|
| Horizon Zero Dawn | 24−27
+108%
|
12−14
−108%
|
| Metro Exodus | 6−7
+200%
|
2−3
−200%
|
| Red Dead Redemption 2 | 9−10
+125%
|
4−5
−125%
|
| Shadow of the Tomb Raider | 14−16
+133%
|
6−7
−133%
|
| Watch Dogs: Legion | 40−45
+128%
|
18−20
−128%
|
Full HD
High Preset
| Assassin's Creed Odyssey | 10−11
+150%
|
4−5
−150%
|
| Assassin's Creed Valhalla | 2−3 | 0−1 |
| Battlefield 5 | 7−8
+133%
|
3−4
−133%
|
| Call of Duty: Modern Warfare | 8−9
+167%
|
3−4
−167%
|
| Cyberpunk 2077 | 6−7
+200%
|
2−3
−200%
|
| Far Cry 5 | 7−8
+133%
|
3−4
−133%
|
| Far Cry New Dawn | 10−11
+150%
|
4−5
−150%
|
| Forza Horizon 4 | 20−22
+122%
|
9−10
−122%
|
| Hitman 3 | 9−10
+125%
|
4−5
−125%
|
| Horizon Zero Dawn | 24−27
+108%
|
12−14
−108%
|
| Metro Exodus | 6−7
+200%
|
2−3
−200%
|
| Red Dead Redemption 2 | 9−10
+125%
|
4−5
−125%
|
| Shadow of the Tomb Raider | 14−16
+133%
|
6−7
−133%
|
| The Witcher 3: Wild Hunt | 14−16
+114%
|
7−8
−114%
|
| Watch Dogs: Legion | 40−45
+128%
|
18−20
−128%
|
Full HD
Ultra Preset
| Assassin's Creed Odyssey | 10−11
+150%
|
4−5
−150%
|
| Assassin's Creed Valhalla | 2−3 | 0−1 |
| Call of Duty: Modern Warfare | 8−9
+167%
|
3−4
−167%
|
| Cyberpunk 2077 | 6−7
+200%
|
2−3
−200%
|
| Far Cry 5 | 7−8
+133%
|
3−4
−133%
|
| Forza Horizon 4 | 20−22
+122%
|
9−10
−122%
|
| Hitman 3 | 9−10
+125%
|
4−5
−125%
|
| Horizon Zero Dawn | 24−27
+108%
|
12−14
−108%
|
| Shadow of the Tomb Raider | 14−16
+133%
|
6−7
−133%
|
| The Witcher 3: Wild Hunt | 14−16
+114%
|
7−8
−114%
|
| Watch Dogs: Legion | 40−45
+128%
|
18−20
−128%
|
Full HD
Epic Preset
| Red Dead Redemption 2 | 9−10
+125%
|
4−5
−125%
|
1440p
High Preset
| Battlefield 5 | 6−7
+200%
|
2−3
−200%
|
| Far Cry New Dawn | 5−6
+150%
|
2−3
−150%
|
1440p
Ultra Preset
| Assassin's Creed Odyssey | 3−4
+200%
|
1−2
−200%
|
| Call of Duty: Modern Warfare | 3−4
+200%
|
1−2
−200%
|
| Cyberpunk 2077 | 2−3 | 0−1 |
| Far Cry 5 | 4−5
+300%
|
1−2
−300%
|
| Forza Horizon 4 | 1−2 | 0−1 |
| Hitman 3 | 8−9
+167%
|
3−4
−167%
|
| Horizon Zero Dawn | 8−9
+167%
|
3−4
−167%
|
| The Witcher 3: Wild Hunt | 3−4
+200%
|
1−2
−200%
|
| Watch Dogs: Legion | 21−24
+110%
|
10−11
−110%
|
1440p
Epic Preset
| Red Dead Redemption 2 | 7−8
+133%
|
3−4
−133%
|
4K
High Preset
| Battlefield 5 | 2−3 | 0−1 |
| Far Cry New Dawn | 2−3 | 0−1 |
4K
Ultra Preset
| Assassin's Creed Odyssey | 2−3 | 0−1 |
| Assassin's Creed Valhalla | 1−2 | 0−1 |
| Call of Duty: Modern Warfare | 1−2 | 0−1 |
| Cyberpunk 2077 | 0−1 | 0−1 |
| Far Cry 5 | 2−3 | 0−1 |
| Forza Horizon 4 | 1−2 | 0−1 |
| Watch Dogs: Legion | 1−2 | 0−1 |
4K
Epic Preset
| Red Dead Redemption 2 | 4−5
+300%
|
1−2
−300%
|
Pros & cons summary
| Performance score | 3.43 | 1.70 |
| Maximum RAM amount | 1 GB | 2 GB |
| Power consumption (TDP) | 32 Watt | 50 Watt |
HD 7770M has a 101.8% higher aggregate performance score, and 56.3% lower power consumption.
GT 640 OEM, on the other hand, has a 100% higher maximum VRAM amount.
The Radeon HD 7770M is our recommended choice as it beats the GeForce GT 640 OEM in performance tests.
Be aware that Radeon HD 7770M is a notebook card while GeForce GT 640 OEM 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
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