GPU Comparison
RADEON
AMD Radeon R6 M255DX
CORE STATE
Jet
VRAM
System Shared
CLOCK SPEED
855 MHz
TDP
—
BUS WIDTH
System Shared
ARCHITECTURE
GCN 1.0
PROCESS
28 nm
LAUNCH DATE
2014
VS
RADEON
Radeon RX 9070 GRE
CORE STATE
Navi 48
VRAM
12 GB
CLOCK SPEED
2790 MHz
TDP
220 W
BUS WIDTH
192 bit
ARCHITECTURE
RDNA 4.0
PROCESS
4 nm
LAUNCH DATE
2025
PERFORMANCE BENCHMARKS
geekbench_vulkan
geekbench_opencl
DETAILED SPECIFICATIONS
SPECIFICATION
R6 M255DX
RX 9070 GRE
Core Specs
Shading Units
320
3,072
+860.0%
Shaders
320
3,072
+860.0%
TMUs
20
192
+860.0%
ROPs
8
96
+1100.0%
Compute Units
5
48
+860.0%
Clocks
Base Clock
780 MHz
1420 MHz
Boost Clock
855 MHz
2790 MHz
Game Clock
—
2220 MHz
Memory Clock
System Shared
2250 MHz
18 Gbps effective
Memory
Memory Size
System Shared
12 GB
VRAM (MB)
—
12,288
Memory Type
System Shared
GDDR6
Memory Bus
System Shared
192 bit
Bandwidth
System Dependent
432.0 GB/s
Cache
L1 Cache
16 KB (per CU)
—
L2 Cache
128 KB
8 MB
L3 Cache
—
48 MB
L0 Cache
—
32 KB per WGP
Performance
Pixel Rate
6.840 GPixel/s
267.8 GPixel/s
Texture Rate
17.10 GTexel/s
535.7 GTexel/s
FP32 (TFLOPS)
547.2 GFLOPS
34.28 TFLOPS
FP64 (TFLOPS)
34.20 GFLOPS (1:16)
1,071.4 GFLOPS (1:32)
FP16 (TFLOPS)
—
68.57 TFLOPS (2:1)
AI/RT
RT Cores
—
48
Matrix Cores
—
96
Power
TDP
—
220 W
TDP (W)
—
220
Suggested PSU
—
550 W
Power Connectors
—
2x 8-pin
Architecture
Architecture
GCN 1.0
RDNA 4.0
GPU Name
Jet
Navi 48
Generation
Gem System Hybrid
(Rx M200)
Navi IV
(RX 9000)
Process Size
28 nm
4 nm
Transistors
690 million
53,900 million
Die Size
56 mm²
357 mm²
Foundry
TSMC
TSMC
Density
12.3M / mm²
151.0M / mm²
API Support
DirectX
12 (11_1)
12 Ultimate (12_2)
OpenGL
4.6
4.6
Vulkan
1.2.170
1.4
OpenCL
2.1 (1.2)
2.2
Shader Model
6.5 (5.1)
6.8
Physical
Slot Width
IGP
Dual-slot
Outputs
Portable Device Dependent
1x HDMI 2.1b3x DisplayPort 2.1a
Bus Interface
IGP
PCIe 5.0 x16
Other
Production
End-of-life
Active
Predecessor
—
Navi III