GPU Comparison
RADEON
AMD Radeon RX 640 Mobile
CORE STATE
Polaris 23
VRAM
2 GB
CLOCK SPEED
1218 MHz
TDP
50 W
BUS WIDTH
64 bit
ARCHITECTURE
GCN 4.0
PROCESS
14 nm
LAUNCH DATE
2019
VS
GPU
Aubrey Isle
CORE STATE
Knights Ferry
VRAM
2 GB
CLOCK SPEED
—
TDP
300 W
BUS WIDTH
256 bit
ARCHITECTURE
Knights
PROCESS
45 nm
LAUNCH DATE
2010
DETAILED SPECIFICATIONS
SPECIFICATION
RX 640 Mobile
Aubrey Isle
Core Specs
Shading Units
640
512
-20.0%
Shaders
640
512
-20.0%
TMUs
40
32
-20.0%
ROPs
16
0
-100.0%
Compute Units
10
—
Execution Units
—
32
Clocks
Base Clock
1082 MHz
—
Boost Clock
1218 MHz
—
GPU Clock
—
1200 MHz
Memory Clock
1500 MHz
6 Gbps effective
1200 MHz
4.8 Gbps effective
Memory
Memory Size
2 GB
2 GB
VRAM (MB)
2,048
2,048
0.0%
Memory Type
GDDR5
GDDR5
Memory Bus
64 bit
256 bit
Bandwidth
48.00 GB/s
153.6 GB/s
Cache
L1 Cache
16 KB (per CU)
—
L2 Cache
512 KB
—
Performance
Pixel Rate
19.49 GPixel/s
0 MPixel/s
Texture Rate
48.72 GTexel/s
38.40 GTexel/s
FP32 (TFLOPS)
1.559 TFLOPS
1,228.8 GFLOPS
FP64 (TFLOPS)
97.44 GFLOPS (1:16)
—
FP16 (TFLOPS)
1.559 TFLOPS (1:1)
—
Power
TDP
50 W
300 W
TDP (W)
50
300
+500.0%
Suggested PSU
—
700 W
Power Connectors
None
1x 6-pin + 1x 8-pin
Architecture
Architecture
GCN 4.0
Knights
GPU Name
Polaris 23
Knights Ferry
Generation
Polaris Mobile
(M600)
Knights Ferry
Process Size
14 nm
45 nm
Transistors
2,200 million
2,300 million
Die Size
103 mm²
684 mm²
Foundry
GlobalFoundries
Intel
Density
21.4M / mm²
3.4M / mm²
API Support
DirectX
12 (12_0)
—
OpenGL
4.6
—
Vulkan
1.3
—
OpenCL
2.1
1.2
Shader Model
6.7
5.0
Physical
Slot Width
IGP
Dual-slot
Length
—
267 mm
10.5 inches
Outputs
Portable Device Dependent
1x DVI1x HDMI1x DisplayPort
Bus Interface
PCIe 3.0 x8
PCIe 2.0 x16
Other
Production
End-of-life
End-of-life
Predecessor
Gem System
—
Successor
Navi Mobile
Knights Corner