NVIDIA GeForce GTX 680 Mac Edition vs AMD Radeon RX 640 Mobile
GPU · Specs Compare
Graphics Card
Release Date
Apr 2013
May 2019
Generation
GeForce 600
Mobility Radeon
Type
Desktop
Mobile
Bus Interface
PCIe 2.0 x16
PCIe 3.0 x8
Clock Speeds
Base Clock
1006 MHz
1082 MHz
Boost Clock
1058 MHz
1218 MHz
Memory Clock
1502 MHz
1500 MHz
Memory
Memory Size
2GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
64bit
Bandwidth
192.3GB/s
48.00GB/s
Render Config
Shading Units
1536
640
TMUs
128
40
ROPs
32
16
L1 Cache
16 KB (per SMX)
16 KB (per CU)
L2 Cache
512 KB
512 KB
Compute Units
—
10
Theoretical Performance
Pixel Rate
33.86 GPixel/s
19.49 GPixel/s
Texture Rate
135.4 GTexel/s
48.72 GTexel/s
FP32 (float)
3.250 TFLOPS
1.559 TFLOPS
FP64 (double)
135.4 GFLOPS
97.44 GFLOPS
FP16 (half)
—
1.559 TFLOPS
Graphics Processor
GPU Name
GK104
Polaris 23
GPU Variant
GK104-400-A2
Polaris 23 XT
Architecture
Kepler
GCN 4.0
Foundry
TSMC
GlobalFoundries
Process Size
28 nm
14 nm
Transistors
3.54 billion
2.2 billion
Die Size
294 mm²
103 mm²
Board Design
TDP
195W
50W
Suggested PSU
450 W
—
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
No outputs
Power Connectors
2x 6-pin
None
Graphics Features
DirectX
12 (11_0)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
3.0
2.1
Vulkan
1.1
1.2
CUDA
3.0
—
Shader Model
5.1
6.4
▲ Specs Compare
Data sourced from official specifications and benchmark tests.