AMD Radeon HD 6870 vs NVIDIA GeForce GTX TITAN Z
GPU · Specs Compare
Graphics Card
Release Date
Oct 2010
May 2014
Generation
Northern Islands
GeForce 700
Type
Desktop
Desktop
Bus Interface
PCIe 2.0 x16
PCIe 3.0 x16
Clock Speeds
Memory Clock
1050 MHz
1750 MHz
Base Clock
—
705 MHz
Boost Clock
—
876 MHz
Memory
Memory Size
1024MB
6GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
384bit
Bandwidth
134.4GB/s
336.0GB/s
Render Config
Compute Units
14
—
Shading Units
1120
2880
TMUs
56
240
ROPs
32
48
L1 Cache
8 KB (per CU)
16 KB (per SMX)
L2 Cache
512 KB
1536 KB
Theoretical Performance
Pixel Rate
28.80 GPixel/s
52.56 GPixel/s
Texture Rate
50.40 GTexel/s
210.2 GTexel/s
FP32 (float)
2.016 TFLOPS
5.046 TFLOPS
FP64 (double)
—
1.682 TFLOPS
Graphics Processor
GPU Name
Barts
GK110B
GPU Variant
Barts XT(215-0798000)
GK110-350-B1
Architecture
TeraScale 2
Kepler
Foundry
TSMC
TSMC
Process Size
40 nm
28 nm
Transistors
1.7 billion
7.08 billion
Die Size
255 mm²
561 mm²
Board Design
TDP
151W
375W
Suggested PSU
450 W
750 W
Outputs
2x DVI1x HDMI 1.3a2x mini-DisplayPort 1.1
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
2x 6-pin
2x 8-pin
Graphics Features
DirectX
11.2 (11_0)
12 (11_1)
OpenGL
4.4
4.6
OpenCL
1.2
3.0
Vulkan
N/A
1.2.175
Shader Model
5.0
6.5 (5.1)
CUDA
—
3.5
▲ Specs Compare
Data sourced from official specifications and benchmark tests.