Radeon HD 2900 XT vs GeForce GT 640 OEM
Aggregated performance score
General info
GPU architecture, market segment, value for money and other general parameters compared.
| Place in performance ranking | 889 | 888 |
| Place by popularity | not in top-100 | not in top-100 |
| Architecture | Kepler (2012−2018) | TeraScale (2005−2013) |
| GPU code name | GK107 | R600 |
| Market segment | Desktop | Desktop |
| Release date | 24 April 2012 (12 years ago) | 14 May 2007 (16 years ago) |
| Launch price (MSRP) | no data | $399 |
| Current price | $99 | no data |
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 | 384 | 320 |
| Core clock speed | 797 MHz | 743 MHz |
| Number of transistors | 1,270 million | 720 million |
| Manufacturing process technology | 28 nm | 80 nm |
| Power consumption (TDP) | 50 Watt | 215 Watt |
| Texture fill rate | 25.50 | 11.89 |
| Floating-point performance | 612.1 gflops | 475.5 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 | PCIe 3.0 x16 | PCIe 1.0 x16 |
| Length | 145 mm | 241 mm |
| Width | 1-slot | 2-slot |
| Supplementary power connectors | None | 1x 6-pin + 1x 8-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 | DDR3 | GDDR3 |
| Maximum RAM amount | 2 GB | 512 MB |
| Memory bus width | 128 Bit | 512 Bit |
| Memory clock speed | 1782 MHz | 1656 MHz |
| Memory bandwidth | 28.51 GB/s | 106.0 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 | 1x DVI, 1x HDMI, 1x DisplayPort | 2x DVI, 1x S-Video |
| HDMI | + | no data |
API support
List of supported graphics and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (11_0) | 10.0 (10_0) |
| Shader Model | 5.1 | 4.0 |
| OpenGL | 4.6 | 3.3 |
| OpenCL | 1.2 | N/A |
| Vulkan | 1.1.126 | N/A |
| CUDA | 3.0 | no data |
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
| Recency | 24 April 2012 | 14 May 2007 |
| Maximum RAM amount | 2 GB | 512 MB |
| Chip lithography | 28 nm | 80 nm |
| Power consumption (TDP) | 50 Watt | 215 Watt |
Given the minimal performance differences, no clear winner can be declared between GeForce GT 640 OEM and Radeon HD 2900 XT.
Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.
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