GeForce GT 640 Rev. 2 vs Radeon HD 6770
Aggregated performance score
GeForce GT 640 Rev. 2 outperforms Radeon HD 6770 by 9% based on our aggregated benchmark results.
General info
GPU architecture, market segment, value for money and other general parameters compared.
| Place in performance ranking | 704 | 684 |
| Place by popularity | not in top-100 | not in top-100 |
| Value for money | 0.23 | 0.18 |
| Architecture | TeraScale 2 (2009−2015) | Kepler 2.0 (2013−2015) |
| GPU code name | Juniper | GK208 |
| Market segment | Desktop | Desktop |
| Design | reference | no data |
| Release date | 21 January 2011 (13 years old) | 29 May 2013 (10 years old) |
| Launch price (MSRP) | $129 | $89 |
| Current price | $150 (1.2x MSRP) | $230 (2.6x MSRP) |
Value for money
Performance to price ratio. The higher, the better.
HD 6770 has 28% better value for money than GT 640 Rev. 2.
Technical specs
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 | 800 | 384 |
| Core clock speed | no data | 1046 MHz |
| Boost clock speed | 900 MHz | no data |
| Number of transistors | 1,040 million | 915 million |
| Manufacturing process technology | 40 nm | 28 nm |
| Power consumption (TDP) | 108 Watt | 49 Watt |
| Texture fill rate | 34.00 | 33.47 |
| Floating-point performance | 1,360.0 gflops | 803.3 gflops |
Size and 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).
| Bus support | PCIe 2.0 x16 | no data |
| Interface | PCIe 2.0 x16 | PCIe 2.0 x8 |
| Length | 198 mm | 145 mm |
| Width | 2-slot | 1-slot |
| Supplementary power connectors | 1x 6-pin | None |
Memory
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 | 1 GB | 1 GB |
| Memory bus width | 128 Bit | 64 Bit |
| Memory clock speed | 1050 MHz | 5008 MHz |
| Memory bandwidth | 76.8 GB/s | 40.06 GB/s |
Video outputs and ports
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 HDMI, 2x mini-DisplayPort | 1x DVI, 1x HDMI, 1x VGA |
| Eyefinity | 1 | no data |
| HDMI | + | + |
| DisplayPort support | - | no data |
Technologies
Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.
| AppAcceleration | - | no data |
| CrossFire | 1 | no data |
| Enduro | - | no data |
| HD3D | - | no data |
| PowerTune | - | no data |
| TrueAudio | - | no data |
| ZeroCore | - | no data |
API support
List of supported graphics and general-purpose computing APIs, including their specific versions.
| DirectX | DirectX® 11 | 12 (11_0) |
| Shader Model | 5.0 | 5.1 |
| OpenGL | 4.4 | 4.6 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | no data | 1.1.126 |
| Mantle | - | no data |
| 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.
Advantages and disadvantages
| Performance score | 3.22 | 3.51 |
| Recency | 21 January 2011 | 29 May 2013 |
| Cost | $129 | $89 |
| Chip lithography | 40 nm | 28 nm |
| Power consumption (TDP) | 108 Watt | 49 Watt |
Given the minimal performance differences, no clear winner can be declared between Radeon HD 6770 and GeForce GT 640 Rev. 2.
Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.
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