AMD Radeon HD 7670M Rebrand vs AMD Radeon R7 M340
Graphics Processor
| GPU model | Whistler | Meso |
|---|---|---|
| GPU variant | Whistler XT (216-0810001) | Meso PRO (216-0864032) |
| Architecture | TeraScale 2 | GCN 3.0 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 40 nm | 28 nm |
| Number of transistors | 716 million | 1,550 million |
| Die size | 104 mm² | 125 mm² |
Mobile graphics
| Release date | Jul 1st, 2012 | May 5th, 2015 |
|---|---|---|
| Generation | London (HD 7600M) | Crystal System (R7 M300) |
| Production | End-of-life | End-of-life |
| Interface | PCIe 2.0 x16 | PCIe 3.0 x8 |
| Predecessor | Vancouver | Solar System |
| Successor | Solar System | Mobility Radeon |
Clocks
| GPU clock | 600 MHz | — |
|---|---|---|
| Memory clock | 900 MHz 1800 Mbps effective | 1000 MHz 2 Gbps effective |
| Base clock | — | 943 MHz |
| Boost clock | — | 1021 MHz |
Memory Configuration
| Memory size | 1024 MB | 2 GB |
|---|---|---|
| Memory type | GDDR3 | DDR3 |
| Memory bus width | 128 bit | 64 bit |
| Bandwidth | 28.80 GB/s | 16.00 GB/s |
Render Configuration
| Shading units | 480 | 320 |
|---|---|---|
| TMUs | 24 | 20 |
| ROPs | 16 | 8 |
| Compute units | 6 | 5 |
| Cache L1 | 8 KB (per CU) | 16 KB (per CU) |
| Cache L2 | 256 KB | 128 KB |
Performance
| Pixel rate | 9.600 GPixel/s | 8.168 GPixel/s |
|---|---|---|
| Texture rate | 14.40 GTexel/s | 20.42 GTexel/s |
| FP32 (float) performance | 576.0 GFLOPS | 653.4 GFLOPS |
| FP16 (half) performance | — | 653.4 GFLOPS (1:1) |
| FP64 (double) performance | — | 40.84 GFLOPS (1:16) |
Dimensions & Outputs
| TDP | 20 W | unknown |
|---|---|---|
| Outputs | No outputs | No outputs |
API Support & Features
| DirectX | 11.2 (11_0) | 12 (12_0) |
|---|---|---|
| OpenGL | 4.4 | 4.6 |
| OpenCL | 1.2 | 2.0 |
| Vulkan | — | 1.2 |
| Shader model | 5.0 | 6.0 |
