ATI Radeon HD 3850 X3 vs GeForce 8800 GTS 640

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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
ArchitectureTesla (2006−2010)TeraScale (2005−2013)
GPU code nameG80RV670
Market segmentDesktopDesktop
Release date8 November 2006 (18 years ago)no data
Launch price (MSRP)$449 no data

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 cores96320
Core clock speed513 MHz669 MHz
Number of transistors681 million666 million
Manufacturing process technology90 nm55 nm
Power consumption (TDP)143 Watt145 Watt
Texture fill rate24.6210.70
Floating-point processing power0.2281 TFLOPSno data
ROPs2016
TMUs2416

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 2.0 x16
Length267 mm292 mm
Width2-slot2-slot
Supplementary power connectors1x 6-pin1x 8-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 amount640 MB512 MB
Memory bus width320 Bit256 Bit
Memory clock speed792 MHz1700 MBps
Memory bandwidth63.36 GB/s54.4 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-Video4x DVI

API compatibility

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

DirectX11.1 (10_0)10.1 (10_1)
Shader Model4.04.1
OpenGL3.33.3 (full) 4.0 (partial)
OpenCL1.1N/A
VulkanN/AN/A
CUDA+-

Pros & cons summary


Maximum RAM amount 640 MB 512 MB
Chip lithography 90 nm 55 nm
Power consumption (TDP) 143 Watt 145 Watt

8800 GTS 640 has a 25% higher maximum VRAM amount, and 1.4% lower power consumption.

ATI HD 3850 X3, on the other hand, has a 63.6% more advanced lithography process.

We couldn't decide between GeForce 8800 GTS 640 and Radeon HD 3850 X3. 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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NVIDIA GeForce 8800 GTS 640
GeForce 8800 GTS 640
ATI Radeon HD 3850 X3
Radeon HD 3850 X3

Comparisons with similar GPUs

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Community ratings

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Questions & comments

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