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 8400M GT
CORE STATE
G86S
VRAM
256 MB
CLOCK SPEED
—
TDP
14 W
BUS WIDTH
128 bit
ARCHITECTURE
Tesla
PROCESS
80 nm
LAUNCH DATE
2007
DETAILED SPECIFICATIONS
SPECIFICATION
RX 640 OEM
8400M GT
Core Specs
Shading Units
640
16
-97.5%
Shaders
640
16
-97.5%
TMUs
40
8
-80.0%
ROPs
16
4
-75.0%
Compute Units
10
—
SM Count
—
2
Clocks
GPU Clock
1295 MHz
450 MHz
Shader Clock
—
900 MHz
Memory Clock
1500 MHz
6 Gbps effective
602 MHz
1204 Mbps effective
Memory
Memory Size
4 GB
256 MB
VRAM (MB)
4,096
256
-93.8%
Memory Type
GDDR5
GDDR3
Memory Bus
128 bit
128 bit
Bandwidth
96.00 GB/s
19.26 GB/s
Cache
L1 Cache
16 KB (per CU)
—
L2 Cache
512 KB
32 KB
Performance
Pixel Rate
20.72 GPixel/s
1.800 GPixel/s
Texture Rate
51.80 GTexel/s
3.600 GTexel/s
FP32 (TFLOPS)
1.658 TFLOPS
28.80 GFLOPS
FP64 (TFLOPS)
103.6 GFLOPS (1:16)
—
FP16 (TFLOPS)
1.658 TFLOPS (1:1)
—
Power
TDP
50 W
14 W
TDP (W)
50
14
-72.0%
Suggested PSU
250 W
—
Power Connectors
None
None
Architecture
Architecture
GCN 4.0
Tesla
GPU Name
Polaris 23
G86S
Generation
Polaris
(RX 600)
GeForce 8M
(8000M)
Process Size
14 nm
80 nm
Transistors
2,200 million
210 million
Die Size
103 mm²
127 mm²
Foundry
GlobalFoundries
TSMC
Density
21.4M / mm²
1.7M / mm²
API Support
DirectX
12 (12_0)
11.1 (10_0)
OpenGL
4.6
3.3
Vulkan
1.3
—
OpenCL
2.1
1.1
CUDA
—
1.1
CUDA SDK
—
6.5
Shader Model
6.7
4.0
Physical
Slot Width
Single-slot
MXM Module
Outputs
1x DisplayPort 1.4a2x mini-DisplayPort 1.4a
Portable Device Dependent
Bus Interface
PCIe 3.0 x8
PCIe 1.0 x16
Other
Production
End-of-life
End-of-life
Predecessor
Polaris
GeForce Go 7
Successor
Vega
GeForce 9M