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
GeForce GT 745M
CORE STATE
GK107
VRAM
2 GB
CLOCK SPEED
—
TDP
45 W
BUS WIDTH
128 bit
ARCHITECTURE
Kepler
PROCESS
28 nm
LAUNCH DATE
2013
PERFORMANCE BENCHMARKS
geekbench_opencl
DETAILED SPECIFICATIONS
SPECIFICATION
R5 M255
GT 745M
Core Specs
Shading Units
384
384
0.0%
Shaders
384
384
0.0%
TMUs
24
32
+33.3%
ROPs
8
16
+100.0%
Compute Units
6
—
Clocks
Base Clock
925 MHz
—
Boost Clock
940 MHz
—
GPU Clock
—
549 MHz
Memory Clock
1000 MHz
2 Gbps effective
1000 MHz
4 Gbps effective
Memory
Memory Size
2 GB
2 GB
VRAM (MB)
2,048
2,048
0.0%
Memory Type
DDR3
GDDR5
Memory Bus
128 bit
128 bit
Bandwidth
32.00 GB/s
64.00 GB/s
Cache
L1 Cache
16 KB (per CU)
16 KB (per SMX)
L2 Cache
256 KB
256 KB
Performance
Pixel Rate
7.520 GPixel/s
4.392 GPixel/s
Texture Rate
22.56 GTexel/s
17.57 GTexel/s
FP32 (TFLOPS)
721.9 GFLOPS
421.6 GFLOPS
FP64 (TFLOPS)
45.12 GFLOPS (1:16)
17.57 GFLOPS (1:24)
FP16 (TFLOPS)
721.9 GFLOPS (1:1)
—
Power
TDP
—
45 W
TDP (W)
—
45
Architecture
Architecture
GCN 3.0
Kepler
GPU Name
Topaz
GK107
Generation
Gem System
(R5 M200)
GeForce 700M
Process Size
28 nm
28 nm
Transistors
1,550 million
1,270 million
Die Size
125 mm²
118 mm²
Foundry
TSMC
TSMC
Density
12.4M / mm²
10.8M / mm²
API Support
DirectX
12 (12_0)
12 (11_0)
OpenGL
4.6
4.6
Vulkan
1.2.170
1.2.175
OpenCL
2.1
3.0
CUDA
—
3.0
Shader Model
6.5
6.5 (5.1)
Physical
Slot Width
—
IGP
Outputs
—
Portable Device Dependent
Bus Interface
PCIe 3.0 x8
PCIe 3.0 x16
Other
Production
End-of-life
End-of-life
Predecessor
Solar System
GeForce 600M
Successor
Polaris Mobile
GeForce 800M