GPU Comparison
RADEON
AMD Radeon RX 640 OEM
CORE STATE
Polaris 23
VRAM
4 GB
CLOCK SPEED
—
TDP
50 W
BUS WIDTH
128 bit
ARCHITECTURE
GCN 4.0
PROCESS
14 nm
LAUNCH DATE
2020
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
RX 640 OEM
GT 745M
Core Specs
Shading Units
640
384
-40.0%
Shaders
640
384
-40.0%
TMUs
40
32
-20.0%
ROPs
16
16
0.0%
Compute Units
10
—
Clocks
GPU Clock
1295 MHz
549 MHz
Memory Clock
1500 MHz
6 Gbps effective
1000 MHz
4 Gbps effective
Memory
Memory Size
4 GB
2 GB
VRAM (MB)
4,096
2,048
-50.0%
Memory Type
GDDR5
GDDR5
Memory Bus
128 bit
128 bit
Bandwidth
96.00 GB/s
64.00 GB/s
Cache
L1 Cache
16 KB (per CU)
16 KB (per SMX)
L2 Cache
512 KB
256 KB
Performance
Pixel Rate
20.72 GPixel/s
4.392 GPixel/s
Texture Rate
51.80 GTexel/s
17.57 GTexel/s
FP32 (TFLOPS)
1.658 TFLOPS
421.6 GFLOPS
FP64 (TFLOPS)
103.6 GFLOPS (1:16)
17.57 GFLOPS (1:24)
FP16 (TFLOPS)
1.658 TFLOPS (1:1)
—
Power
TDP
50 W
45 W
TDP (W)
50
45
-10.0%
Suggested PSU
250 W
—
Power Connectors
None
—
Architecture
Architecture
GCN 4.0
Kepler
GPU Name
Polaris 23
GK107
Generation
Polaris
(RX 600)
GeForce 700M
Process Size
14 nm
28 nm
Transistors
2,200 million
1,270 million
Die Size
103 mm²
118 mm²
Foundry
GlobalFoundries
TSMC
Density
21.4M / mm²
10.8M / mm²
API Support
DirectX
12 (12_0)
12 (11_0)
OpenGL
4.6
4.6
Vulkan
1.3
1.2.175
OpenCL
2.1
3.0
CUDA
—
3.0
Shader Model
6.7
6.5 (5.1)
Physical
Slot Width
Single-slot
IGP
Outputs
1x DisplayPort 1.4a2x mini-DisplayPort 1.4a
Portable Device Dependent
Bus Interface
PCIe 3.0 x8
PCIe 3.0 x16
Other
Production
End-of-life
End-of-life
Predecessor
Polaris
GeForce 600M
Successor
Vega
GeForce 800M