GeForce 8800 GTS 640 vs Radeon HD 6670A
General info
GPU architecture, market segment, value for money and other general parameters compared.
| Place in performance ranking | not rated | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Architecture | TeraScale 2 (2009−2015) | Tesla (2006−2010) |
| GPU code name | Turks | G80 |
| Market segment | Desktop | Desktop |
| Release date | 19 April 2011 (13 years ago) | 8 November 2006 (17 years ago) |
| Launch price (MSRP) | no data | $449 |
| Current price | no data | $254 (0.6x MSRP) |
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 | 480 | 96 |
| Core clock speed | 600 MHz | 513 MHz |
| Number of transistors | 716 million | 681 million |
| Manufacturing process technology | 40 nm | 90 nm |
| Power consumption (TDP) | 45 Watt | 143 Watt |
| Texture fill rate | 14.40 | 24.62 |
| Floating-point performance | 576.0 gflops | 228.1 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).
| Interface | MXM-A (3.0) | PCIe 1.0 x16 |
| Length | no data | 267 mm |
| Width | MXM Module | 2-slot |
| Supplementary power connectors | no data | 1x 6-pin |
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 | GDDR3 |
| Maximum RAM amount | 1 GB | 640 MB |
| Memory bus width | 128 Bit | 320 Bit |
| Memory clock speed | 4000 MHz | 1584 MHz |
| Memory bandwidth | 64 GB/s | 63.36 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 | No outputs | 2x DVI, 1x S-Video |
API support
List of supported graphics and general-purpose computing APIs, including their specific versions.
| DirectX | 11.2 (11_0) | 11.1 (10_0) |
| Shader Model | 5.0 | 4.0 |
| OpenGL | 4.4 | 3.3 |
| OpenCL | 1.2 | 1.1 |
| Vulkan | N/A | N/A |
| CUDA | no data | + |
Advantages and disadvantages
| Recency | 19 April 2011 | 8 November 2006 |
| Maximum RAM amount | 1 GB | 640 MB |
| Chip lithography | 40 nm | 90 nm |
| Power consumption (TDP) | 45 Watt | 143 Watt |
We couldn't decide between Radeon HD 6670A and GeForce 8800 GTS 640. We've got no test results to judge.
Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.
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