GeForce GT 640 OEM vs 8800 Ultra
Aggregate performance score
We've compared GeForce 8800 Ultra and GeForce GT 640 OEM, covering specs and all relevant benchmarks.
GT 640 OEM outperforms 8800 Ultra by a minimal 2% based on our aggregate benchmark results.
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in performance ranking | 899 | 892 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.03 | no data |
| Architecture | Tesla (2006−2010) | Kepler (2012−2018) |
| GPU code name | G80 | GK107 |
| Market segment | Desktop | Desktop |
| Release date | 2 May 2007 (17 years ago) | 24 April 2012 (12 years ago) |
| Launch price (MSRP) | $829 | no data |
| Current price | $235 (0.3x MSRP) | $99 |
Cost-effectiveness evaluation
Performance to price ratio. The higher, the better.
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 | 128 | 384 |
| CUDA cores | 612 | no data |
| Core clock speed | 612 MHz | 797 MHz |
| Number of transistors | 681 million | 1,270 million |
| Manufacturing process technology | 90 nm | 28 nm |
| Power consumption (TDP) | 171 Watt | 50 Watt |
| Texture fill rate | 39.2 billion/sec | 25.50 |
| Floating-point performance | 387.1 gflops | 612.1 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 1.0 x16 | PCIe 3.0 x16 |
| Length | 270 mm | 145 mm |
| Width | 2-slot | 1-slot |
| Supplementary power connectors | 2x 6-pin | None |
| SLI options | + | no data |
VRAM capacity and type
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 | GDDR3 | DDR3 |
| Maximum RAM amount | 512 MB | 2 GB |
| Memory bus width | 384 Bit | 128 Bit |
| Memory clock speed | 1080 MHz | 1782 MHz |
| Memory bandwidth | 103.7 GB/s | 28.51 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 DisplayPort |
| HDMI | no data | + |
API compatibility
List of supported graphics and general-purpose computing APIs, including their specific versions.
| DirectX | 11.1 (10_0) | 12 (11_0) |
| Shader Model | 4.0 | 5.1 |
| OpenGL | 3.3 | 4.6 |
| OpenCL | 1.1 | 1.2 |
| Vulkan | N/A | 1.1.126 |
| CUDA | + | 3.0 |
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 | 1.66 | 1.69 |
| Recency | 2 May 2007 | 24 April 2012 |
| Maximum RAM amount | 512 MB | 2 GB |
| Chip lithography | 90 nm | 28 nm |
| Power consumption (TDP) | 171 Watt | 50 Watt |
Given the minimal performance differences, no clear winner can be declared between GeForce 8800 Ultra and GeForce GT 640 OEM.
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.
