AMD · Radeon HD 4000 Series

AMD Mobility Radeon HD 4270

The AMD Mobility Radeon HD 4270 is a graphics card released on May 1, 2010. It has 40 shading units, 512 MB of video memory and a boost clock of 590 MHz. It scores 93 in the PassMark G3D benchmark. It supports DirectX 10.1 and OpenGL 3.3.

RV620

4/10 key specs recorded · 20 facts

Depth: 26 recorded fields

Specification data last verified October 1, 2026 against PassMark Videocard Benchmark and Wikipedia GPU list tables (wikigrid-2026-09). Coverage: 4 of 10 tracked specifications recorded.

PassMark Videocard Benchmark Wikipedia GPU list tables (wikigrid-2026-09)PassMark Videocard Benchmark

Shading units

40cores

Memory

512 MB

Boost clock

n/a

590 MHz base

Board power

n/a

Performance

The AMD Mobility Radeon HD 4270 scores 93 in the PassMark G3D benchmark, higher than 16% of the 2,658 GPUs benchmarked (PassMark rank #2,425), measured across 9 submitted results. Its PassMark G2D score is 282.

PassMark G3D Mark

Rank #2,425
Faster than 16% of 2,658 GPUs
9 samples

0relative to the fastest GPU on record (41,928)

As stated by PassMark

Category Mobile

Bus interface Internal PCIe x16 1.1

Max memory 512 MB

Core clock 590 MHz

Memory clock 800 MHz

DirectX 10.1

OpenGL 2

First benchmarked 2010-09-05

Samples 9

PassMark listing (collected 2026-10-01)

PassMark's own listing for the AMD Mobility Radeon HD 4270 states the Internal PCIe x16 1.1 interface, up to 512 MB of memory, a core clock of 590 MHz, DirectX 10.1 and OpenGL 2, first benchmarked on 2010-09-05. These are PassMark's figures, shown separately from the specification tables above.

Graphics processor

Architecture Not recorded

Codename RV620

Chip Not recorded

Process node Not recorded

Transistors Not recorded

Die size Not recorded

The AMD Mobility Radeon HD 4270 uses the RV620 graphics processor.

Shader configuration

Shading units 40

Compute units Not recorded

Streaming multiprocessors Not recorded

Execution units Not recorded

Texture units (TMUs) 4

Render output units (ROPs) 4

Ray tracing cores Not recorded

Tensor / AI cores Not recorded

XMX engines Not recorded

Infinity cache Not recorded

The AMD Mobility Radeon HD 4270 has 40 shading units, 4 texture mapping units and 4 render output units.

The AMD Mobility Radeon HD 4270 does not use XMX engines; those are specific to Intel Arc graphics. Feex has no recorded ray tracing core count for the AMD Mobility Radeon HD 4270.

Clock speeds

Base clock 590 MHz

Boost clock Not recorded

Game clock Not recorded

Memory clock Not recorded

Effective memory clock Not recorded

The AMD Mobility Radeon HD 4270 runs at a base clock of 590 MHz.

Memory

Size 512 MB

Type Not recorded

Bus width Not recorded

Bandwidth Not recorded

The AMD Mobility Radeon HD 4270 is equipped with 512 MB of memory.

Board and power

The AMD Mobility Radeon HD 4270 it connects over Internal PCIe x16 1.1.

Board power (TDP) Not recorded

Total board power Not recorded

Suggested PSU Not recorded

Power connectors Not recorded

Slot width Not recorded

Length Not recorded

Width Not recorded

Height Not recorded

Cooler Not recorded

Max temperature Not recorded

Bus interface Internal PCIe x16 1.1

Market

Launched May 1, 2010

Launch price Not recorded

Status Not recorded

Form factor Not recorded

Segment Desktop

Series Radeon HD 4000 Series

The AMD Mobility Radeon HD 4270 was released on May 1, 2010.

Benchmarks

PassMark G3D 93

PassMark G2D 282

Rank #2,425

Samples 9

Graphics and compute APIs

The AMD Mobility Radeon HD 4270 supports DirectX 10.1 and OpenGL 3.3.

DirectX 10.1

OpenGL 3.3

CUDA is an NVIDIA technology and does not apply to the AMD Mobility Radeon HD 4270. Feex has no recorded Vulkan version for the AMD Mobility Radeon HD 4270. Feex has no recorded OpenCL version for the AMD Mobility Radeon HD 4270.