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
Quadro K420
CORE STATE
GK107
VRAM
1024 MB
CLOCK SPEED
—
TDP
41 W
BUS WIDTH
128 bit
ARCHITECTURE
Kepler
PROCESS
28 nm
LAUNCH DATE
2014
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
RX 640 OEM
Quadro K420
Core Specs
Shading Units
640
192
-70.0%
Shaders
640
192
-70.0%
TMUs
40
16
-60.0%
ROPs
16
16
0.0%
Compute Units
10
—
Clocks
GPU Clock
1295 MHz
876 MHz
Memory Clock
1500 MHz
6 Gbps effective
891 MHz
1782 Mbps effective
Memory
Memory Size
4 GB
1024 MB
VRAM (MB)
4,096
1,024
-75.0%
Memory Type
GDDR5
DDR3
Memory Bus
128 bit
128 bit
Bandwidth
96.00 GB/s
28.51 GB/s
Cache
L1 Cache
16 KB (per CU)
16 KB (per SMX)
L2 Cache
512 KB
256 KB
Performance
Pixel Rate
20.72 GPixel/s
3.504 GPixel/s
Texture Rate
51.80 GTexel/s
14.02 GTexel/s
FP32 (TFLOPS)
1.658 TFLOPS
336.4 GFLOPS
FP64 (TFLOPS)
103.6 GFLOPS (1:16)
14.02 GFLOPS (1:24)
FP16 (TFLOPS)
1.658 TFLOPS (1:1)
—
Power
TDP
50 W
41 W
TDP (W)
50
41
-18.0%
Suggested PSU
250 W
200 W
Power Connectors
None
None
Architecture
Architecture
GCN 4.0
Kepler
GPU Name
Polaris 23
GK107
Generation
Polaris
(RX 600)
Quadro Kepler
(Kx200)
Process Size
14 nm
28 nm
Transistors
2,200 million
1,270 million
Die Size
103 mm²
118 mm²
Foundry
GlobalFoundries
TSMC
Density
21.4M / mm²
10.8M / 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
Single-slot
Length
—
160 mm
6.3 inches
Height
—
69 mm
2.7 inches
Outputs
1x DisplayPort 1.4a2x mini-DisplayPort 1.4a
1x DVI1x DisplayPort 1.2
Bus Interface
PCIe 3.0 x8
PCIe 2.0 x16
Other
Production
End-of-life
End-of-life
Predecessor
Polaris
Quadro Fermi
Successor
Vega
Quadro Maxwell