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
GEFORCE
RTX 4000 SFF Ada Generation
CORE STATE
AD104
VRAM
20 GB
CLOCK SPEED
1560 MHz
TDP
70 W
BUS WIDTH
160 bit
ARCHITECTURE
Ada Lovelace
PROCESS
5 nm
LAUNCH DATE
2023
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
R5 M255
RTX 4000 SFF Ada Generation
Core Specs
Shading Units
384
6,144
+1500.0%
Shaders
384
6,144
+1500.0%
TMUs
24
192
+700.0%
ROPs
8
64
+700.0%
Compute Units
6
—
SM Count
—
48
Clocks
Base Clock
925 MHz
720 MHz
Boost Clock
940 MHz
1560 MHz
Memory Clock
1000 MHz
2 Gbps effective
1750 MHz
14 Gbps effective
Memory
Memory Size
2 GB
20 GB
VRAM (MB)
2,048
20,480
+900.0%
Memory Type
DDR3
GDDR6
Memory Bus
128 bit
160 bit
Bandwidth
32.00 GB/s
280.0 GB/s
Cache
L1 Cache
16 KB (per CU)
128 KB (per SM)
L2 Cache
256 KB
48 MB
Performance
Pixel Rate
7.520 GPixel/s
99.84 GPixel/s
Texture Rate
22.56 GTexel/s
299.5 GTexel/s
FP32 (TFLOPS)
721.9 GFLOPS
19.17 TFLOPS
FP64 (TFLOPS)
45.12 GFLOPS (1:16)
299.5 GFLOPS (1:64)
FP16 (TFLOPS)
721.9 GFLOPS (1:1)
19.17 TFLOPS (1:1)
AI/RT
RT Cores
—
48
Tensor Cores
—
192
Power
TDP
—
70 W
TDP (W)
—
70
Suggested PSU
—
250 W
Power Connectors
—
None
Architecture
Architecture
GCN 3.0
Ada Lovelace
GPU Name
Topaz
AD104
Generation
Gem System
(R5 M200)
Workstation Ada
(x000A)
Process Size
28 nm
5 nm
Transistors
1,550 million
35,800 million
Die Size
125 mm²
294 mm²
Foundry
TSMC
TSMC
Density
12.4M / mm²
121.8M / 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
3.0
CUDA
—
8.9
Shader Model
6.5
6.8
Physical
Slot Width
—
Dual-slot
Length
—
168 mm
6.6 inches
Height
—
69 mm
2.7 inches
Outputs
—
4x mini-DisplayPort 1.4a
Bus Interface
PCIe 3.0 x8
PCIe 4.0 x16
Other
Production
End-of-life
Active
Predecessor
Solar System
Workstation Ampere
Successor
Polaris Mobile
Blackwell PRO W