NVIDIA GeForce GTX 870M vs AMD Radeon HD 6990
GPU Specs Compare
Graphics Card
Release Date
Mar 2014
Mar 2011
Generation
GeForce 800M
Northern Islands
Type
Mobile
Desktop
Bus Interface
MXM-B (3.0)
PCIe 2.0 x16
Clock Speeds
Base Clock
941 MHz
-
Boost Clock
967 MHz
-
Memory Clock
1250 MHz
1250 MHz
Memory
Memory Size
3GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
192bit
256bit
Bandwidth
120.0GB/s
160.0GB/s
Render Config
Shading Units
1344
1536
TMUs
112
96
ROPs
24
32
L1 Cache
16 KB (per SMX)
8 KB (per CU)
L2 Cache
384 KB
512 KB
Compute Units
-
24
Theoretical Performance
Pixel Rate
27.08 GPixel/s
26.56 GPixel/s
Texture Rate
108.3 GTexel/s
79.68 GTexel/s
FP32 (float)
2.599 TFLOPS
2.550 TFLOPS
FP64 (double)
108.3 GFLOPS
637.4 GFLOPS
Graphics Processor
GPU Name
GK104
Antilles
GPU Variant
N15E-GT-A2
Antilles XT(215-0807027)
Architecture
Kepler
TeraScale 3
Foundry
TSMC
TSMC
Process Size
28 nm
40 nm
Transistors
3.54 billion
2.64 billion
Die Size
294 mm²
389 mm²
Board Design
TDP
100W
375W
Outputs
No outputs
1x DVI4x mini-DisplayPort 1.2
Power Connectors
None
2x 8-pin
Suggested PSU
-
750 W
Graphics Features
DirectX
12 (11_0)
11.2 (11_0)
OpenGL
4.6
4.4
OpenCL
3.0
1.2
Vulkan
1.1
N/A
CUDA
3.0
-
Shader Model
5.1
5.0