amd
Brand8GB GDDR6
Memory2048
Cores256 GB/s
BandwidthAMD Radeon RX 6600 XT
amd
Brand8GB GDDR5
Memory2560
Cores384 GB/s
BandwidthAMD Radeon R9 390
AMD Radeon RX 6600 XT
Radeon RX 6600 XT
$379 • Jul 2021
Radeon R9 390
$329 • Jun 2015
AMD Radeon R9 390
Specs Comparison
| Specification | AMD Radeon RX 6600 XT | AMD Radeon R9 390 |
|---|---|---|
| Memory Size | 8 GB | 8 GB |
| Memory Type | GDDR6 | GDDR5 |
| TDP | 160 W | 275 W |
| Core Clock | N/A | N/A |
| Boost Clock | 2589 MHz | N/A |
| Memory Bandwidth | 256 GB/s | 384 GB/s |
| Process Size | 7nm | 28nm |
| Architecture | RDNA 2.0 | GCN 2.0 |
| Shading Units | 2048 | 2560 |
| RT Cores | 32 | N/A |
| TMUs | 128 | 160 |
| ROPs | 64 | 64 |
| Memory Bus | 128-bit | 512-bit |
| Memory Clock | 2000 MHz | 1500 MHz |
| Pixel Rate | 165.7 GPixel/s | 64 GPixel/s |
| Texture Rate | 256 GTexel/s | 384 GTexel/s |
| FP32 Performance | 10.6 GFLOPS | 5.12 GFLOPS |
| L2 Cache | 2.00 MB | 1.00 MB |
| Die Size | 237 mm² | 438 mm² |
| Transistors | 11060 Million | 6200 Million |
| Required PSU | 450 W | 600 W |
| Power Connectors | 1x 8-pin | 1x 6-pin + 1x 8-pin |
| Bus Interface | PCIe 4.0 x8 | PCIe 3.0 x16 |
| DirectX | 12.2 | 12 |
| Vulkan | 1.3 | N/A |
| OpenGL | 4.6 | 4.6 |
| Foundry | TSMC | TSMC |
Comparison in Synthetic Benchmarks
3DMark Time Spy
Synthetic DirectX 12 benchmark that measures GPU performance in gaming workloads
Graphics Score
AMD Radeon RX 6600 XT
AMD Radeon R9 390
Geekbench 6
Cross-platform benchmark that measures GPU compute performance using OpenCL and Metal APIs
OpenCL Score
AMD Radeon RX 6600 XT
AMD Radeon R9 390
GFXBench 5.0
Cross-platform 3D graphics benchmark suite that measures GPU performance across different APIs
Aztec Ruins High (FPS)
AMD Radeon RX 6600 XT
AMD Radeon R9 390
PassMark G2D
Comprehensive 2D graphics benchmark that measures GPU performance in various graphics operations
G2D Mark
AMD Radeon RX 6600 XT
AMD Radeon R9 390
Game Benchmarks Comparison
No game benchmarks available for this combination of GPUs yet.
We're working on collecting performance data for this combination of GPUs. Please check back later.
AMD Radeon RX 6600 XT Wins!
Based on 4 synthetic benchmarks
AMD Radeon RX 6600 XT
AMD • 8GB GDDR6
AMD Radeon R9 390
AMD • 8GB GDDR5
Most Compared GPUs
Comments & Discussion
Share your thoughts and experiences