AMD Radeon R5 M320 vs ATI Radeon HD 3850 X3
Graphics Processor
| GPU model | Jet | RV670 |
|---|---|---|
| GPU variant | Jet PRO (216-0568010) | RV670 PRO (215-0708003) |
| Architecture | GCN 1.0 | TeraScale |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 55 nm |
| Number of transistors | 690 million | 666 million |
| Die size | 56 mm² | 192 mm² |
Mobile graphics
| Release date | May 5th, 2015 | — |
|---|---|---|
| Generation | Crystal System (R5 M300) | — |
| Production | End-of-life | — |
| Interface | PCIe 3.0 x8 | — |
| Predecessor | Solar System | — |
| Successor | Mobility Radeon | — |
Clocks
| Base clock | 780 MHz | — |
|---|---|---|
| Boost clock | 855 MHz | — |
| Memory clock | 1000 MHz 2 Gbps effective | 850 MHz 1700 Mbps effective |
| GPU clock | — | 669 MHz |
Memory Configuration
| Memory size | 4 GB | 512 MB |
|---|---|---|
| Memory type | DDR3 | GDDR3 |
| Memory bus width | 64 bit | 256 bit |
| Bandwidth | 16.00 GB/s | 54.40 GB/s |
Render Configuration
| Shading units | 320 | 320 |
|---|---|---|
| TMUs | 20 | 16 |
| ROPs | 8 | 16 |
| Compute units | 5 | 4 |
| Cache L1 | 16 KB (per CU) | — |
| Cache L2 | 128 KB | 256 KB |
Performance
| Pixel rate | 6.840 GPixel/s | 10.70 GPixel/s |
|---|---|---|
| Texture rate | 17.10 GTexel/s | 10.70 GTexel/s |
| FP32 (float) performance | 547.2 GFLOPS | 428.2 GFLOPS |
| FP64 (double) performance | 34.20 GFLOPS (1:16) | — |
Dimensions & Outputs
| Slot width | IGP | Dual-slot |
|---|---|---|
| TDP | unknown | 145 W |
| Outputs | No outputs | 4x DVI |
| Length | — | 292 mm 11.5 inches |
| Suggested PSU | — | 300 W |
| Power connectors | — | 1x 8-pin |
API Support & Features
| DirectX | 12 (11_1) | 10.1 (10_1) |
|---|---|---|
| OpenGL | 4.6 | 3.3 (full) 4.0 (partial) |
| OpenCL | 1.2 | — |
| Vulkan | 1.2 | — |
| Shader model | 5.1 | 4.1 |
Other Features
Graphics Card
| Release date | — | Never Released |
|---|---|---|
| Generation | — | Radeon R600 |
| Production | — | End-of-life |
| Interface | — | PCIe 2.0 x16 |
| Predecessor | — | Radeon R500 PCIe |
| Successor | — | Radeon R700 |
