NVIDIA GeForce GTX 680 Mac Edition vs AMD Radeon HD 7990
GPU Specs Compare
Graphics Card
Release Date
Apr 2013
Apr 2013
Generation
GeForce 600
Southern Islands
Type
Desktop
Desktop
Bus Interface
PCIe 2.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
1006 MHz
950 MHz
Boost Clock
1058 MHz
1000 MHz
Memory Clock
1502 MHz
1500 MHz
Memory
Memory Size
2GB
3GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
384bit
Bandwidth
192.3GB/s
288.0GB/s
Render Config
Shading Units
1536
2048
TMUs
128
128
ROPs
32
32
L1 Cache
16 KB (per SMX)
16 KB (per CU)
L2 Cache
512 KB
768 KB
Compute Units
-
32
Theoretical Performance
Pixel Rate
33.86 GPixel/s
32.00 GPixel/s
Texture Rate
135.4 GTexel/s
128.0 GTexel/s
FP32 (float)
3.250 TFLOPS
4.096 TFLOPS
FP64 (double)
135.4 GFLOPS
1024 GFLOPS
Graphics Processor
GPU Name
GK104
Malta
GPU Variant
GK104-400-A2
Malta XT(215-0849026)
Architecture
Kepler
GCN 1.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
3.54 billion
4.313 billion
Die Size
294 mm²
365 mm²
Board Design
TDP
195W
375W
Suggested PSU
450 W
750 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
1x DVI4x mini-DisplayPort 1.2
Power Connectors
2x 6-pin
2x 8-pin
Graphics Features
DirectX
12 (11_0)
12 (11_1)
OpenGL
4.6
4.6
OpenCL
3.0
1.2
Vulkan
1.1
1.2
CUDA
3.0
-
Shader Model
5.1
5.1