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
A40 PCIe
CORE STATE
GA102
VRAM
48 GB
CLOCK SPEED
1740 MHz
TDP
300 W
BUS WIDTH
384 bit
ARCHITECTURE
Ampere
PROCESS
8 nm
LAUNCH DATE
2020
DETAILED SPECIFICATIONS
SPECIFICATION
RX 640 OEM
A40 PCIe
Core Specs
Shading Units
640
10,752
+1580.0%
Shaders
640
10,752
+1580.0%
TMUs
40
336
+740.0%
ROPs
16
112
+600.0%
Compute Units
10
—
SM Count
—
84
Clocks
Base Clock
—
1305 MHz
Boost Clock
—
1740 MHz
GPU Clock
1295 MHz
—
Memory Clock
1500 MHz
6 Gbps effective
1812 MHz
14.5 Gbps effective
Memory
Memory Size
4 GB
48 GB
VRAM (MB)
4,096
49,152
+1100.0%
Memory Type
GDDR5
GDDR6
Memory Bus
128 bit
384 bit
Bandwidth
96.00 GB/s
695.8 GB/s
Cache
L1 Cache
16 KB (per CU)
128 KB (per SM)
L2 Cache
512 KB
6 MB
Performance
Pixel Rate
20.72 GPixel/s
194.9 GPixel/s
Texture Rate
51.80 GTexel/s
584.6 GTexel/s
FP32 (TFLOPS)
1.658 TFLOPS
37.42 TFLOPS
FP64 (TFLOPS)
103.6 GFLOPS (1:16)
584.6 GFLOPS (1:64)
FP16 (TFLOPS)
1.658 TFLOPS (1:1)
37.42 TFLOPS (1:1)
AI/RT
RT Cores
—
84
Tensor Cores
—
336
Power
TDP
50 W
300 W
TDP (W)
50
300
+500.0%
Suggested PSU
250 W
700 W
Power Connectors
None
8-pin EPS
Architecture
Architecture
GCN 4.0
Ampere
GPU Name
Polaris 23
GA102
Generation
Polaris
(RX 600)
Server Ampere
(Axx)
Process Size
14 nm
8 nm
Transistors
2,200 million
28,300 million
Die Size
103 mm²
628 mm²
Foundry
GlobalFoundries
Samsung
Density
21.4M / mm²
45.1M / mm²
API Support
DirectX
12 (12_0)
12 Ultimate (12_2)
OpenGL
4.6
4.6
Vulkan
1.3
1.4
OpenCL
2.1
3.0
CUDA
—
8.6
Shader Model
6.7
6.8
Physical
Slot Width
Single-slot
Dual-slot
Length
—
267 mm
10.5 inches
Height
—
111 mm
4.4 inches
Outputs
1x DisplayPort 1.4a2x mini-DisplayPort 1.4a
3x DisplayPort 1.4a
Bus Interface
PCIe 3.0 x8
PCIe 4.0 x16
Other
Production
End-of-life
End-of-life
Predecessor
Polaris
Tesla Turing
Successor
Vega
Server Ada