GPU Comparison
RADEON
AMD Radeon R5 M255
CORE STATE
Topaz
VRAM
2 GB
CLOCK SPEED
940 MHz
TDP
—
BUS WIDTH
128 bit
ARCHITECTURE
GCN 3.0
PROCESS
28 nm
LAUNCH DATE
2014
VS
RADEON
Radeon RX 6600 LE
CORE STATE
Navi 23
VRAM
8 GB
CLOCK SPEED
2495 MHz
TDP
132 W
BUS WIDTH
128 bit
ARCHITECTURE
RDNA 2.0
PROCESS
7 nm
LAUNCH DATE
2023
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
R5 M255
RX 6600 LE
Core Specs
Shading Units
384
1,792
+366.7%
Shaders
384
1,792
+366.7%
TMUs
24
112
+366.7%
ROPs
8
64
+700.0%
Compute Units
6
28
+366.7%
Clocks
Base Clock
925 MHz
1626 MHz
Boost Clock
940 MHz
2495 MHz
Game Clock
—
2045 MHz
Memory Clock
1000 MHz
2 Gbps effective
1750 MHz
14 Gbps effective
Memory
Memory Size
2 GB
8 GB
VRAM (MB)
2,048
8,192
+300.0%
Memory Type
DDR3
GDDR6
Memory Bus
128 bit
128 bit
Bandwidth
32.00 GB/s
224.0 GB/s
Cache
L1 Cache
16 KB (per CU)
128 KB per Array
L2 Cache
256 KB
2 MB
L3 Cache
—
32 MB
L0 Cache
—
32 KB per WGP
Performance
Pixel Rate
7.520 GPixel/s
159.7 GPixel/s
Texture Rate
22.56 GTexel/s
279.4 GTexel/s
FP32 (TFLOPS)
721.9 GFLOPS
8.942 TFLOPS
FP64 (TFLOPS)
45.12 GFLOPS (1:16)
558.9 GFLOPS (1:16)
FP16 (TFLOPS)
721.9 GFLOPS (1:1)
17.88 TFLOPS (2:1)
AI/RT
RT Cores
—
28
Power
TDP
—
132 W
TDP (W)
—
132
Suggested PSU
—
300 W
Power Connectors
—
1x 8-pin
Architecture
Architecture
GCN 3.0
RDNA 2.0
GPU Name
Topaz
Navi 23
Generation
Gem System
(R5 M200)
Navi II
(RX 6000)
Process Size
28 nm
7 nm
Transistors
1,550 million
11,060 million
Die Size
125 mm²
237 mm²
Foundry
TSMC
TSMC
Density
12.4M / mm²
46.7M / mm²
API Support
DirectX
12 (12_0)
12 Ultimate (12_2)
OpenGL
4.6
4.6
Vulkan
1.2.170
1.4
OpenCL
2.1
2.1
Shader Model
6.5
6.8
Physical
Slot Width
—
Dual-slot
Length
—
190 mm
7.5 inches
Height
—
110 mm
4.3 inches
Outputs
—
1x HDMI 2.13x DisplayPort 1.4a
Bus Interface
PCIe 3.0 x8
PCIe 4.0 x8
Other
Production
End-of-life
Active
Predecessor
Solar System
Navi
Successor
Polaris Mobile
Navi III