AMD Mobility Radeon HD 3870 X2
The AMD Mobility Radeon HD 3870 X2 is a graphics card released on September 1, 2008. It has 2 MB of GDDR3 memory, a boost clock of 660 MHz and a 110 W board power rating. It scores 478 in the PassMark G3D benchmark. It supports DirectX 10.1 and OpenGL 2.
Depth: 27 recorded fields, 2 PassMark workloads
Specification data last verified October 1, 2026 against PassMark Videocard Benchmark and Wikipedia GPU list tables (wikigrid-2026-09). Coverage: 5 of 10 tracked specifications recorded.
Performance
The AMD Mobility Radeon HD 3870 X2 scores 478 in the PassMark G3D benchmark, higher than 35.4% of the 2,658 GPUs benchmarked (PassMark rank #1,913), measured across 57 submitted results. Its PassMark G2D score is 187.
PassMark workload tests
In the PassMark workload tests the AMD Mobility Radeon HD 3870 X2 averages DirectX 9 14 fps and DirectX 10 2 fps, across 57 submitted results. Frames per second are PassMark test-scene rates, not game frame rates.
As stated by PassMark
PassMark's own listing for the AMD Mobility Radeon HD 3870 X2 states the PCIe x16 2.0 interface, up to 2 MB of memory, a core clock of 660 MHz, DirectX 10.1 and OpenGL 2, first benchmarked on 2009-09-13. These are PassMark's figures, shown separately from the specification tables above.
Graphics processor
The AMD Mobility Radeon HD 3870 X2 uses the R680 graphics processor.
Clock speeds
The AMD Mobility Radeon HD 3870 X2 runs at a base clock of 660 MHz.
Memory
The AMD Mobility Radeon HD 3870 X2 is equipped with 2 MB of GDDR3 memory.
Board and power
The AMD Mobility Radeon HD 3870 X2 has a board power rating of 110 W and it connects over PCIe x16 2.0.
Market
The AMD Mobility Radeon HD 3870 X2 was released on September 1, 2008.
Benchmarks
Graphics and compute APIs
The AMD Mobility Radeon HD 3870 X2 supports DirectX 10.1 and OpenGL 2.
CUDA is an NVIDIA technology and does not apply to the AMD Mobility Radeon HD 3870 X2. Feex has no recorded Vulkan version for the AMD Mobility Radeon HD 3870 X2. Feex has no recorded OpenCL version for the AMD Mobility Radeon HD 3870 X2.
Naming and aliases
The AMD Mobility Radeon HD 3870 X2 is also known by other names: PassMark also lists it as ATI Mobility Radeon HD 3870 X2.
Frequently asked questions
How much VRAM does the AMD Mobility Radeon HD 3870 X2 have?
The AMD Mobility Radeon HD 3870 X2 has 2 MB of GDDR3 memory.
How much power does the AMD Mobility Radeon HD 3870 X2 use and what power supply does it need?
The AMD Mobility Radeon HD 3870 X2 has a board power rating of 110 W.
How fast is the AMD Mobility Radeon HD 3870 X2?
The AMD Mobility Radeon HD 3870 X2 scores 478 in the PassMark G3D benchmark, higher than 35.4% of the 2,658 GPUs benchmarked. Its PassMark rank is #1,913.
What bus interface does the AMD Mobility Radeon HD 3870 X2 use?
The AMD Mobility Radeon HD 3870 X2 connects over PCIe x16 2.0.
When was the AMD Mobility Radeon HD 3870 X2 released?
The AMD Mobility Radeon HD 3870 X2 was released on September 1, 2008.