T400 4 GB vs ATI Radeon HD 4750

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Primary details

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

Place in the rankingnot rated458
Place by popularitynot in top-100not in top-100
Power efficiencyno data22.43
ArchitectureTeraScale (2005−2013)Turing (2018−2022)
GPU code nameRV740TU117
Market segmentDesktopWorkstation
Release date9 September 2009 (15 years ago)6 May 2021 (3 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 cores640384
Core clock speed730 MHz420 MHz
Boost clock speedno data1425 MHz
Number of transistors826 million4,700 million
Manufacturing process technology40 nm12 nm
Power consumption (TDP)100 Watt30 Watt
Texture fill rate23.3634.20
Floating-point processing power0.9344 TFLOPS1.094 TFLOPS
ROPs1616
TMUs3224

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 2.0 x16PCIe 3.0 x16
Width1-slot1-slot
Supplementary power connectors1x 6-pinNone

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 typeGDDR5GDDR6
Maximum RAM amount512 MB4 GB
Memory bus width128 Bit64 Bit
Memory clock speed800 MHz1250 MHz
Memory bandwidth51.2 GB/s80 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-Video3x mini-DisplayPort

API compatibility

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

DirectX10.1 (10_1)12 (12_1)
Shader Model4.16.6
OpenGL3.34.6
OpenCL1.13.0
VulkanN/A1.2
CUDA-7.5

Pros & cons summary


Recency 9 September 2009 6 May 2021
Maximum RAM amount 512 MB 4 GB
Chip lithography 40 nm 12 nm
Power consumption (TDP) 100 Watt 30 Watt

T400 4 GB has an age advantage of 11 years, a 700% higher maximum VRAM amount, a 233.3% more advanced lithography process, and 233.3% lower power consumption.

We couldn't decide between Radeon HD 4750 and T400 4 GB. We've got no test results to judge.

Be aware that Radeon HD 4750 is a desktop card while T400 4 GB 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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ATI Radeon HD 4750
Radeon HD 4750
NVIDIA T400 4 GB
T400 4 GB

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.


4.6 56 votes

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4.1 57 votes

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Questions & comments

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