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 GTX 670MX
CORE STATE
GK104
VRAM
3 GB
CLOCK SPEED
601 MHz
TDP
75 W
BUS WIDTH
192 bit
ARCHITECTURE
Kepler
PROCESS
28 nm
LAUNCH DATE
2012
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
RX 640 OEM
GTX 670MX
Core Specs
Shading Units
640
960
+50.0%
Shaders
640
960
+50.0%
TMUs
40
80
+100.0%
ROPs
16
24
+50.0%
Compute Units
10
—
Clocks
Base Clock
—
601 MHz
Boost Clock
—
601 MHz
GPU Clock
1295 MHz
—
Memory Clock
1500 MHz
6 Gbps effective
700 MHz
2.8 Gbps effective
Memory
Memory Size
4 GB
3 GB
VRAM (MB)
4,096
3,072
-25.0%
Memory Type
GDDR5
GDDR5
Memory Bus
128 bit
192 bit
Bandwidth
96.00 GB/s
67.20 GB/s
Cache
L1 Cache
16 KB (per CU)
16 KB (per SMX)
L2 Cache
512 KB
384 KB
Performance
Pixel Rate
20.72 GPixel/s
12.02 GPixel/s
Texture Rate
51.80 GTexel/s
48.08 GTexel/s
FP32 (TFLOPS)
1.658 TFLOPS
1,153.9 GFLOPS
FP64 (TFLOPS)
103.6 GFLOPS (1:16)
48.08 GFLOPS (1:24)
FP16 (TFLOPS)
1.658 TFLOPS (1:1)
—
Power
TDP
50 W
75 W
TDP (W)
50
75
+50.0%
Suggested PSU
250 W
—
Power Connectors
None
None
Architecture
Architecture
GCN 4.0
Kepler
GPU Name
Polaris 23
GK104
Generation
Polaris
(RX 600)
GeForce 600M
Process Size
14 nm
28 nm
Transistors
2,200 million
3,540 million
Die Size
103 mm²
294 mm²
Foundry
GlobalFoundries
TSMC
Density
21.4M / mm²
12.0M / 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
—
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 500M
Successor
Vega
GeForce 700M