AMD Radeon HD 6670
The AMD Radeon HD 6670 is a graphics card released on April 19, 2011, built on the TeraScale 2 architecture using a 40 nm process. It has 480 shading units, 1 GB of video memory on a 128-bit bus, 64.0 GB/s of memory bandwidth, a boost clock of 800 MHz and a 66 W board power rating. It scores 730 in the PassMark G3D benchmark. It supports DirectX 11 and OpenGL 4.4.
Depth: 42 recorded fields, 4 PassMark workloads
Specification data last verified October 1, 2026 against PassMark Videocard Benchmark, AMD.com Specifications and Wikipedia GPU list tables (wikigrid-2026-09). Coverage: 9 of 10 tracked specifications recorded.
Performance
The AMD Radeon HD 6670 scores 730 in the PassMark G3D benchmark, higher than 46.7% of the 2,658 GPUs benchmarked (PassMark rank #1,605), measured across 5,512 submitted results. Its PassMark G2D score is 254.
PassMark workload tests
In the PassMark workload tests the AMD Radeon HD 6670 averages DirectX 9 19 fps, DirectX 10 3 fps, DirectX 11 8 fps and GPU Compute 376 ops/s, across 5,512 submitted results. Frames per second are PassMark test-scene rates, not game frame rates.
Theoretical throughput
FP32 (single precision) (0.768 TFLOPS), Pixel fill rate (6.4 GPixel/s) and Texture fill rate (19.2 GTexel/s) are calculated by Feex from stored specifications, not stated by AMD.
As stated by PassMark
PassMark's own listing for the AMD Radeon HD 6670 states the PCIe 2.1 x16 interface, up to 2 GB of memory, a core clock of 800,800 MHz, DirectX 11 and OpenGL 4.4, first benchmarked on 2012-08-21. These are PassMark's figures, shown separately from the specification tables above.
Not to be confused with
This page covers the AMD Radeon HD 6670 specifically. It is a different product from AMD Radeon HD 6670 plus 6670 Dual, AMD Radeon HD 6670 plus 7660D Dual, AMD Radeon HD 6670/7670, which have their own specifications. Check the exact model name before comparing figures.
Graphics processor
The AMD Radeon HD 6670 is based on the TeraScale 2 architecture, uses the Turks XT graphics processor, is manufactured on a 40 nm process, contains 716 million transistors and has a die size of 118 mm².
Shader configuration
The AMD Radeon HD 6670 has 480 shading units, 24 texture mapping units and 8 render output units.
The AMD Radeon HD 6670 does not use XMX engines; those are specific to Intel Arc graphics. Feex has no recorded ray tracing core count for the AMD Radeon HD 6670.
Clock speeds
The AMD Radeon HD 6670 runs at a base clock of 800 MHz and boosts to 800 MHz.
Memory
The AMD Radeon HD 6670 is equipped with 1 GB of memory, uses a 128-bit memory bus and delivers 64.0 GB/s of memory bandwidth.
Board and power
The AMD Radeon HD 6670 has a board power rating of 66 W and it connects over PCIe 2.1 x16.
Market
The AMD Radeon HD 6670 was released on April 19, 2011 and launched at a price of $99.
Benchmarks
Graphics and compute APIs
The AMD Radeon HD 6670 supports DirectX 11 and OpenGL 4.4.
CUDA is an NVIDIA technology and does not apply to the AMD Radeon HD 6670. Feex has no recorded Vulkan version for the AMD Radeon HD 6670. Feex has no recorded OpenCL version for the AMD Radeon HD 6670.
Display outputs
The AMD Radeon HD 6670 offers outputs HDMI, Dual Link DVI.
Naming and aliases
The AMD Radeon HD 6670 is also known by other names: PassMark also lists it as AMD Radeon HD 6670 (Engineering Sample) and AMD Radeon HD 6670 (Engineering Sample - WDDM v1.20).
Frequently asked questions
How much VRAM does the AMD Radeon HD 6670 have?
The AMD Radeon HD 6670 has 1 GB of video memory on a 128-bit bus. Its memory bandwidth is 64.0 GB/s.
How much power does the AMD Radeon HD 6670 use and what power supply does it need?
The AMD Radeon HD 6670 has a board power rating of 66 W.
How fast is the AMD Radeon HD 6670?
The AMD Radeon HD 6670 scores 730 in the PassMark G3D benchmark, higher than 46.7% of the 2,658 GPUs benchmarked. Its PassMark rank is #1,605.
What bus interface does the AMD Radeon HD 6670 use?
The AMD Radeon HD 6670 connects over PCIe 2.1 x16.
When was the AMD Radeon HD 6670 released and how much did it cost at launch?
The AMD Radeon HD 6670 was released on April 19, 2011 and launched at a price of $99.