AMD Mobility Radeon HD 3870
The AMD Mobility Radeon HD 3870 is a graphics card released on June 4, 2008. It has 320 shading units, 512 MB of GDDR3 memory, 54.4 GB/s of memory bandwidth, a boost clock of 660 MHz and a 55 W board power rating. It scores 548 in the PassMark G3D benchmark. It supports DirectX 10.1 and OpenGL 2.
Depth: 29 recorded fields
Specification data last verified October 1, 2026 against PassMark Videocard Benchmark and Wikipedia GPU list tables (wikigrid-2026-09). Coverage: 7 of 10 tracked specifications recorded.
Performance
The AMD Mobility Radeon HD 3870 scores 548 in the PassMark G3D benchmark, higher than 38.7% of the 2,658 GPUs benchmarked (PassMark rank #1,826), measured across 3 submitted results. Its PassMark G2D score is 288.
As stated by PassMark
PassMark's own listing for the AMD Mobility Radeon HD 3870 states the PCIe x16 2.0 interface, up to 512 MB of memory, a core clock of 660 MHz, DirectX 10.1 and OpenGL 2, first benchmarked on 2009-12-03. These are PassMark's figures, shown separately from the specification tables above.
Not to be confused with
This page covers the AMD Mobility Radeon HD 3870 specifically. It is a different product from AMD Mobility Radeon HD 3870 X2, which have their own specifications. Check the exact model name before comparing figures.
Graphics processor
The AMD Mobility Radeon HD 3870 uses the RV670 graphics processor.
Shader configuration
The AMD Mobility Radeon HD 3870 has 320 shading units, 16 texture mapping units and 16 render output units.
The AMD Mobility Radeon HD 3870 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 3870.
Clock speeds
The AMD Mobility Radeon HD 3870 runs at a base clock of 660 MHz.
Memory
The AMD Mobility Radeon HD 3870 is equipped with 512 MB of GDDR3 memory and delivers 54.4 GB/s of memory bandwidth.
Board and power
The AMD Mobility Radeon HD 3870 has a board power rating of 55 W and it connects over PCIe x16 2.0.
Market
The AMD Mobility Radeon HD 3870 was released on June 4, 2008.
Benchmarks
Graphics and compute APIs
The AMD Mobility Radeon HD 3870 supports DirectX 10.1 and OpenGL 2.
CUDA is an NVIDIA technology and does not apply to the AMD Mobility Radeon HD 3870. Feex has no recorded Vulkan version for the AMD Mobility Radeon HD 3870. Feex has no recorded OpenCL version for the AMD Mobility Radeon HD 3870.
Naming and aliases
The AMD Mobility Radeon HD 3870 is also known by other names: PassMark also lists it as ATI Mobility Radeon HD 3870.
Frequently asked questions
How much VRAM does the AMD Mobility Radeon HD 3870 have?
The AMD Mobility Radeon HD 3870 has 512 MB of GDDR3 memory. Its memory bandwidth is 54.4 GB/s.
How much power does the AMD Mobility Radeon HD 3870 use and what power supply does it need?
The AMD Mobility Radeon HD 3870 has a board power rating of 55 W.
How fast is the AMD Mobility Radeon HD 3870?
The AMD Mobility Radeon HD 3870 scores 548 in the PassMark G3D benchmark, higher than 38.7% of the 2,658 GPUs benchmarked. Its PassMark rank is #1,826.
What bus interface does the AMD Mobility Radeon HD 3870 use?
The AMD Mobility Radeon HD 3870 connects over PCIe x16 2.0.
When was the AMD Mobility Radeon HD 3870 released?
The AMD Mobility Radeon HD 3870 was released on June 4, 2008.
Similar performance
Compare the AMD Mobility Radeon HD 3870
Side-by-side specification comparisons against cards in the same performance band.