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 GT 640M Mac Edition
CORE STATE
GK107
VRAM
512 MB
CLOCK SPEED
745 MHz
TDP
32 W
BUS WIDTH
64 bit
ARCHITECTURE
Kepler
PROCESS
28 nm
LAUNCH DATE
2013
DETAILED SPECIFICATIONS
SPECIFICATION
RX 640 OEM
GT 640M Mac Edition
Core Specs
Shading Units
640
384
-40.0%
Shaders
640
384
-40.0%
TMUs
40
32
-20.0%
ROPs
16
8
-50.0%
Compute Units
10
—
Clocks
Base Clock
—
745 MHz
Boost Clock
—
745 MHz
GPU Clock
1295 MHz
—
Memory Clock
1500 MHz
6 Gbps effective
1250 MHz
5 Gbps effective
Memory
Memory Size
4 GB
512 MB
VRAM (MB)
4,096
512
-87.5%
Memory Type
GDDR5
GDDR5
Memory Bus
128 bit
64 bit
Bandwidth
96.00 GB/s
40.00 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
5.960 GPixel/s
Texture Rate
51.80 GTexel/s
23.84 GTexel/s
FP32 (TFLOPS)
1.658 TFLOPS
572.2 GFLOPS
FP64 (TFLOPS)
103.6 GFLOPS (1:16)
23.84 GFLOPS (1:24)
FP16 (TFLOPS)
1.658 TFLOPS (1:1)
—
Power
TDP
50 W
32 W
TDP (W)
50
32
-36.0%
Suggested PSU
250 W
—
Power Connectors
None
None
Architecture
Architecture
GCN 4.0
Kepler
GPU Name
Polaris 23
GK107
Generation
Polaris
(RX 600)
GeForce 600M
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
IGP
Outputs
1x DisplayPort 1.4a2x mini-DisplayPort 1.4a
Portable Device Dependent
Bus Interface
PCIe 3.0 x8
PCIe 3.0 x16
Other
Production
End-of-life
End-of-life
Predecessor
Polaris
GeForce 500M
Successor
Vega
GeForce 700M