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
GRID K340
CORE STATE
GK107
VRAM
1024 MB
CLOCK SPEED
—
TDP
225 W
BUS WIDTH
128 bit
ARCHITECTURE
Kepler
PROCESS
28 nm
LAUNCH DATE
2013
DETAILED SPECIFICATIONS
SPECIFICATION
RX 640 OEM
GRID K340
Core Specs
Shading Units
640
384
-40.0%
Shaders
640
384
-40.0%
TMUs
40
32
-20.0%
ROPs
16
16
0.0%
Compute Units
10
—
Clocks
GPU Clock
1295 MHz
954 MHz
Memory Clock
1500 MHz
6 Gbps effective
1250 MHz
5 Gbps effective
Memory
Memory Size
4 GB
1024 MB
VRAM (MB)
4,096
1,024
-75.0%
Memory Type
GDDR5
GDDR5
Memory Bus
128 bit
128 bit
Bandwidth
96.00 GB/s
80.00 GB/s
Cache
L1 Cache
16 KB (per CU)
16 KB (per SMX)
L2 Cache
512 KB
128 KB
Performance
Pixel Rate
20.72 GPixel/s
7.632 GPixel/s
Texture Rate
51.80 GTexel/s
30.53 GTexel/s
FP32 (TFLOPS)
1.658 TFLOPS
732.7 GFLOPS
FP64 (TFLOPS)
103.6 GFLOPS (1:16)
30.53 GFLOPS (1:24)
FP16 (TFLOPS)
1.658 TFLOPS (1:1)
—
Power
TDP
50 W
225 W
TDP (W)
50
225
+350.0%
Suggested PSU
250 W
550 W
Power Connectors
None
1x 8-pin
Architecture
Architecture
GCN 4.0
Kepler
GPU Name
Polaris 23
GK107
Generation
Polaris
(RX 600)
GRID
(K3)
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
Dual-slot
Length
—
267 mm
10.5 inches
Outputs
1x DisplayPort 1.4a2x mini-DisplayPort 1.4a
No outputs
Bus Interface
PCIe 3.0 x8
PCIe 3.0 x16
Other
Launch Price
—
3,299 USD
Production
End-of-life
End-of-life
Predecessor
Polaris
—
Successor
Vega
—