amd
Brand8GB GDDR5
Memory2560
Cores384 GB/s
BandwidthAMD Radeon R9 390
amd
Brand8GB GDDR6
Memory2048
Cores256 GB/s
BandwidthAMD Radeon RX 6600 XT
AMD Radeon R9 390
Radeon R9 390
$329 • Jun 2015
Radeon RX 6600 XT
$379 • Jul 2021
AMD Radeon RX 6600 XT
Specs Comparison
| Specification | AMD Radeon R9 390 | AMD Radeon RX 6600 XT |
|---|---|---|
| Memory Size | 8 GB | 8 GB |
| Memory Type | GDDR5 | GDDR6 |
| TDP | 275 W | 160 W |
| Core Clock | N/A | N/A |
| Boost Clock | N/A | 2589 MHz |
| Memory Bandwidth | 384 GB/s | 256 GB/s |
| Process Size | 28nm | 7nm |
| Architecture | GCN 2.0 | RDNA 2.0 |
| Shading Units | 2560 | 2048 |
| RT Cores | N/A | 32 |
| TMUs | 160 | 128 |
| ROPs | 64 | 64 |
| Memory Bus | 512-bit | 128-bit |
| Memory Clock | 1500 MHz | 2000 MHz |
| Pixel Rate | 64 GPixel/s | 165.7 GPixel/s |
| Texture Rate | 384 GTexel/s | 256 GTexel/s |
| FP32 Performance | 5.12 GFLOPS | 10.6 GFLOPS |
| L2 Cache | 1.00 MB | 2.00 MB |
| Die Size | 438 mm² | 237 mm² |
| Transistors | 6200 Million | 11060 Million |
| Required PSU | 600 W | 450 W |
| Power Connectors | 1x 6-pin + 1x 8-pin | 1x 8-pin |
| Bus Interface | PCIe 3.0 x16 | PCIe 4.0 x8 |
| DirectX | 12 | 12.2 |
| Vulkan | N/A | 1.3 |
| 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 R9 390
AMD Radeon RX 6600 XT
Geekbench 6
Cross-platform benchmark that measures GPU compute performance using OpenCL and Metal APIs
OpenCL Score
AMD Radeon R9 390
AMD Radeon RX 6600 XT
GFXBench 5.0
Cross-platform 3D graphics benchmark suite that measures GPU performance across different APIs
Aztec Ruins High (FPS)
AMD Radeon R9 390
AMD Radeon RX 6600 XT
PassMark G2D
Comprehensive 2D graphics benchmark that measures GPU performance in various graphics operations
G2D Mark
AMD Radeon R9 390
AMD Radeon RX 6600 XT
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 R9 390
AMD • 8GB GDDR5
AMD Radeon RX 6600 XT
AMD • 8GB GDDR6
Most Compared GPUs
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