GeForce GT 640 Rev. 2 vs Radeon HD 4770
Aggregated performance score
GeForce GT 640 Rev. 2 outperforms Radeon HD 4770 by 50% based on our aggregated benchmark results.
Primary Details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in performance ranking | 805 | 683 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-Effectiveness Evaluation | 0.09 | 0.18 |
| Architecture | TeraScale (2005−2013) | Kepler 2.0 (2013−2015) |
| GPU code name | RV740 | GK208 |
| Market segment | Desktop | Desktop |
| Release date | 28 April 2009 (15 years ago) | 29 May 2013 (10 years ago) |
| Launch price (MSRP) | $109 | $89 |
| Current price | $182 (1.7x MSRP) | $230 (2.6x MSRP) |
Cost-Effectiveness Evaluation
Performance to price ratio. The higher, the better.
GT 640 Rev. 2 has 100% better value for money than ATI HD 4770.
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 | 640 | 384 |
| Core clock speed | 750 MHz | 1046 MHz |
| Number of transistors | 826 million | 915 million |
| Manufacturing process technology | 40 nm | 28 nm |
| Power consumption (TDP) | 80 Watt | 49 Watt |
| Texture fill rate | 24.00 | 33.47 |
| Floating-point performance | 960.0 gflops | 803.3 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).
| Interface | PCIe 2.0 x16 | PCIe 2.0 x8 |
| Length | 203 mm | 145 mm |
| Width | 2-slot | 1-slot |
| Supplementary power connectors | 1x 6-pin | None |
| Memory type | GDDR5 | GDDR5 |
| Maximum RAM amount | 512 MB | 1 GB |
| Memory bus width | 128 Bit | 64 Bit |
| Memory clock speed | 3200 MHz | 5008 MHz |
| Memory bandwidth | 51.2 GB/s | 40.06 GB/s |
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 | 2x DVI, 1x S-Video | 1x DVI, 1x HDMI, 1x VGA |
| HDMI | no data | + |
API Compatibility
List of supported graphics and general-purpose computing APIs, including their specific versions.
| DirectX | 10.1 (10_1) | 12 (11_0) |
| Shader Model | 4.1 | 5.1 |
| OpenGL | 3.3 | 4.6 |
| OpenCL | 1.1 | 1.2 |
| Vulkan | N/A | 1.1.126 |
| CUDA | no data | 3.5 |
Gaming performance
Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.
Pros & Cons Summary
| Performance score | 2.35 | 3.52 |
| Recency | 28 April 2009 | 29 May 2013 |
| Cost | $109 | $89 |
| Maximum RAM amount | 512 MB | 1 GB |
| Chip lithography | 40 nm | 28 nm |
| Power consumption (TDP) | 80 Watt | 49 Watt |
The GeForce GT 640 Rev. 2 is our recommended choice as it beats the Radeon HD 4770 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
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
