AMD Radeon HD 7990 vs NVIDIA GeForce GTX 680MX Mac Edition
GPU Specs Compare
Graphics Card
Release Date
Apr 2013
Oct 2012
Generation
Southern Islands
GeForce 600M
Type
Desktop
Mobile
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
950 MHz
-
Boost Clock
1000 MHz
-
Memory Clock
1500 MHz
1250 MHz
Memory
Memory Size
3GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
384bit
256bit
Bandwidth
288.0GB/s
160.0GB/s
Render Config
Compute Units
32
-
Shading Units
2048
1536
TMUs
128
128
ROPs
32
32
L1 Cache
16 KB (per CU)
16 KB (per SMX)
L2 Cache
768 KB
512 KB
Theoretical Performance
Pixel Rate
32.00 GPixel/s
23.01 GPixel/s
Texture Rate
128.0 GTexel/s
92.03 GTexel/s
FP32 (float)
4.096 TFLOPS
2.209 TFLOPS
FP64 (double)
1024 GFLOPS
92.03 GFLOPS
Graphics Processor
GPU Name
Malta
GK104
GPU Variant
Malta XT(215-0849026)
N13E-GTX2-A2
Architecture
GCN 1.0
Kepler
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
4.313 billion
3.54 billion
Die Size
365 mm²
294 mm²
Board Design
TDP
375W
122W
Suggested PSU
750 W
-
Outputs
1x DVI4x mini-DisplayPort 1.2
No outputs
Power Connectors
2x 8-pin
-
Graphics Features
DirectX
12 (11_1)
12 (11_0)
OpenGL
4.6
4.6
OpenCL
1.2
3.0
Vulkan
1.2
1.1
Shader Model
5.1
5.1
CUDA
-
3.0