GeForce 8800 GTS 640 vs ATI Radeon X1950 GT

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Primary details

GPU architecture, market segment, value for money and other general parameters compared.

Place in the rankingnot ratednot rated
Place by popularitynot in top-100not in top-100
ArchitectureR500 (2005−2007)Tesla (2006−2010)
GPU code nameRV570G80
Market segmentDesktopDesktop
Release date29 January 2007 (17 years ago)8 November 2006 (17 years ago)
Launch price (MSRP)$140 $449

Detailed specifications

General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA coresno data96
Core clock speed500 MHz513 MHz
Number of transistors330 million681 million
Manufacturing process technology80 nm90 nm
Power consumption (TDP)57 Watt143 Watt
Texture fill rate6.00024.62
Floating-point processing powerno data0.2281 TFLOPS
ROPs1220
TMUs1224

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).

InterfacePCIe 1.0 x16PCIe 1.0 x16
Lengthno data267 mm
Width1-slot2-slot
Supplementary power connectors1x 6-pin1x 6-pin

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 typeGDDR3GDDR3
Maximum RAM amount256 MB640 MB
Memory bus width256 Bit320 Bit
Memory clock speed600 MHz792 MHz
Memory bandwidth38.4 GB/s63.36 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 Connectors2x DVI, 1x S-Video2x DVI, 1x S-Video

API compatibility

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX9.0c (9_3)11.1 (10_0)
Shader Model3.04.0
OpenGL2.03.3
OpenCLN/A1.1
VulkanN/AN/A
CUDA-+

Pros & cons summary


Recency 29 January 2007 8 November 2006
Maximum RAM amount 256 MB 640 MB
Chip lithography 80 nm 90 nm
Power consumption (TDP) 57 Watt 143 Watt

ATI X1950 GT has an age advantage of 2 months, a 12.5% more advanced lithography process, and 150.9% lower power consumption.

8800 GTS 640, on the other hand, has a 150% higher maximum VRAM amount.

We couldn't decide between Radeon X1950 GT 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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ATI Radeon X1950 GT
Radeon X1950 GT
NVIDIA GeForce 8800 GTS 640
GeForce 8800 GTS 640

Comparisons with similar GPUs

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Community ratings

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3.9 39 votes

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Questions & comments

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