To calculate the index we compare the characteristics of graphics cards against their prices.
NVIDIA GeForce GT 640 vs AMD Radeon HD 6770
Price now
147$
Games supported
59%
- Interface PCIe 2.0 x16
- Core clock speed 0
- Max video memory 1024 MB
- Memory type GDDR5
- Memory clock speed 1050
- Maximum resolution
- Interface PCIe 3.0 x16
- Core clock speed 902 MHz
- Max video memory 2 GB
- Memory type DDR3
- Memory clock speed 1782 MHz
- Maximum resolution
Price now
178$
Games supported
59%
General info
Comparison of graphics card architecture, market segment, value for money and other general parameters.
| Place in performance rating | 632 | 647 |
| Value for money | 0.38 | 0.28 |
| Architecture | TeraScale 2 (2009−2015) | Kepler (2012−2018) |
| GPU code name | Juniper | GK107 |
| Market segment | Desktop | Desktop |
| Design | reference | no data |
| Release date | 21 January 2011 (12 years old) | 5 June 2012 (10 years old) |
| Launch price (MSRP) | $129 | $99 |
| Current price | $147 (1.1x MSRP) | $178 (1.8x MSRP) |
Value for money
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 | 902 MHz |
| Boost clock speed | 900 MHz | no data |
| Number of transistors | 1,040 million | 1,270 million |
| Manufacturing process technology | 40 nm | 28 nm |
| Thermal design power (TDP) | 108 Watt | 65 Watt |
| Texture fill rate | 34.00 | 28.86 |
| Floating-point performance | 1,360.0 gflops | 692.7 gflops |
Compatibility, dimensions and requirements
Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop video 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 3.0 x16 |
| Length | 198 mm | 145 mm |
| Width | 2-slot | 1-slot |
| Supplementary power connectors | 1x 6-pin | None |
Memory
Parameters of memory installed: its type, size, bus, clock and resulting bandwidth. Note that GPUs integrated into processors have no dedicated VRAM 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 | 1050 MHz | 1782 MHz |
| Memory bandwidth | 76.8 GB/s | 28.51 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 DisplayPort |
| 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
APIs supported, including particular versions of those APIs.
| 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 | 3.0 |
Benchmark performance
Non-gaming benchmark performance comparison. Note that overall benchmark performance is measured in points in 0-100 range.
Overall score
This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
- Passmark
- 3DMark Fire Strike Graphics
Passmark
This is probably the most ubiquitous benchmark, part of Passmark PerformanceTest suite. It gives the graphics card a thorough evaluation under various load, providing four separate benchmarks for Direct3D versions 9, 10, 11 and 12 (the last being done in 4K resolution if possible), and few more tests engaging DirectCompute capabilities.
Benchmark coverage: 25%
Radeon HD 6770 outperforms GeForce GT 640 by 5% in Passmark.
3DMark Fire Strike Graphics
Fire Strike is a DirectX 11 benchmark for gaming PCs. It features two separate tests displaying a fight between a humanoid and a fiery creature seemingly made of lava. Using 1920x1080 resolution, Fire Strike shows off some realistic enough graphics and is quite taxing on hardware.
Benchmark coverage: 13%
GeForce GT 640 outperforms Radeon HD 6770 by 3% in 3DMark Fire Strike Graphics.
Mining hashrates
Cryptocurrency mining performance of Radeon HD 6770 and GeForce GT 640. Usually measured in megahashes per second.
| Bitcoin / BTC (SHA256) | 118 Mh/s | 24 Mh/s |
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 rating | 3.15 | 3.01 |
| Recency | 21 January 2011 | 5 June 2012 |
| Cost | $129 | $99 |
| Pipelines / CUDA cores | 800 | 384 |
| Memory bandwidth | 76.8 | 28.51 |
| Chip lithography | 40 nm | 28 nm |
| Thermal design power (TDP) | 108 Watt | 65 Watt |
Technical City couldn't decide between
and
The differences in performance seem too small.
Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.
Competitors of Radeon HD 6770 by NVIDIA
According to our data, the nearest equivalent to Radeon HD 6770 by NVIDIA is GeForce GTX 260, which is slower by 2% and lower by 2 positions in our rating.
Here are some closest NVIDIA rivals to Radeon HD 6770:
Competitors of GeForce GT 640 by AMD
The nearest GeForce GT 640's AMD equivalent is Radeon HD 7730, which is faster by 1% and higher by 2 positions in our performance rating.
Here are some closest AMD rivals to GeForce GT 640:
Similar GPU comparisons
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
