Radeon Pro W6400 vs GeForce 256 SDR

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Primary details

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

Place in the rankingnot rated260
Place by popularitynot in top-100not in top-100
Power efficiencyno data28.96
ArchitectureCelsius (1999−2005)RDNA 2.0 (2020−2024)
GPU code nameNV10 A3Navi 24
Market segmentDesktopWorkstation
Release date11 October 1999 (25 years ago)19 January 2022 (2 years ago)

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 data768
Core clock speed120 MHz2331 MHz
Boost clock speedno data2331 MHz
Number of transistors17 million5,400 million
Manufacturing process technology220 nm6 nm
Power consumption (TDP)no data50 Watt
Texture fill rate0.48111.9
Floating-point processing powerno data3.58 TFLOPS
ROPs432
TMUs448
Ray Tracing Coresno data12

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).

InterfaceAGP 4xPCIe 4.0 x4
Width1-slot1-slot
Supplementary power connectorsNoneNone

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 typeSDRGDDR6
Maximum RAM amount32 MB4 GB
Memory bus width64 Bit64 Bit
Memory clock speed143 MHz1750 MHz
Memory bandwidth1.144 GB/s112.0 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 Connectors1x VGA2x DisplayPort 1.4a

API compatibility

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

DirectX7.012 Ultimate (12_2)
Shader Modelno data6.6
OpenGL1.24.6
OpenCLN/A2.2
VulkanN/A1.3

Pros & cons summary


Recency 11 October 1999 19 January 2022
Maximum RAM amount 32 MB 4 GB
Chip lithography 220 nm 6 nm

Pro W6400 has an age advantage of 22 years, a 12700% higher maximum VRAM amount, and a 3566.7% more advanced lithography process.

We couldn't decide between GeForce 256 SDR and Radeon Pro W6400. We've got no test results to judge.

Be aware that GeForce 256 SDR is a desktop card while Radeon Pro W6400 is a workstation one.


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 256 SDR
GeForce 256 SDR
AMD Radeon Pro W6400
Radeon Pro W6400

Comparisons with similar GPUs

We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.

Community ratings

Here you can see the user ratings of the compared graphics cards, as well as rate them yourself.


3.5 75 votes

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4 28 votes

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Questions & comments

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