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
GEFORCE
GeForce GTX 660 OEM
CORE STATE
GK104
VRAM
1536 MB
CLOCK SPEED
888 MHz
TDP
130 W
BUS WIDTH
192 bit
ARCHITECTURE
Kepler
PROCESS
28 nm
LAUNCH DATE
2012
DETAILED SPECIFICATIONS
SPECIFICATION
RX 640 Mobile
GTX 660 OEM
Core Specs
Shading Units
640
1,152
+80.0%
Shaders
640
1,152
+80.0%
TMUs
40
96
+140.0%
ROPs
16
24
+50.0%
Compute Units
10
—
Clocks
Base Clock
1082 MHz
823 MHz
Boost Clock
1218 MHz
888 MHz
Memory Clock
1500 MHz
6 Gbps effective
1400 MHz
5.6 Gbps effective
Memory
Memory Size
2 GB
1536 MB
VRAM (MB)
2,048
1,536
-25.0%
Memory Type
GDDR5
GDDR5
Memory Bus
64 bit
192 bit
Bandwidth
48.00 GB/s
134.4 GB/s
Cache
L1 Cache
16 KB (per CU)
16 KB (per SMX)
L2 Cache
512 KB
384 KB
Performance
Pixel Rate
19.49 GPixel/s
21.31 GPixel/s
Texture Rate
48.72 GTexel/s
85.25 GTexel/s
FP32 (TFLOPS)
1.559 TFLOPS
2.046 TFLOPS
FP64 (TFLOPS)
97.44 GFLOPS (1:16)
85.25 GFLOPS (1:24)
FP16 (TFLOPS)
1.559 TFLOPS (1:1)
—
Power
TDP
50 W
130 W
TDP (W)
50
130
+160.0%
Suggested PSU
—
300 W
Power Connectors
None
1x 6-pin
Architecture
Architecture
GCN 4.0
Kepler
GPU Name
Polaris 23
GK104
Generation
Polaris Mobile
(M600)
GeForce 600
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
IGP
Dual-slot
Length
—
241 mm
9.5 inches
Outputs
Portable Device Dependent
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Bus Interface
PCIe 3.0 x8
PCIe 3.0 x16
Other
Production
End-of-life
End-of-life
Predecessor
Gem System
GeForce 500
Successor
Navi Mobile
GeForce 700