Radeon HD 6950 and Radeon HD 3870 - video card comparison
Passmark - benchmark score Radeon HD 6950 vs Radeon HD 3870
Radeon HD 6950
2693
Radeon HD 3870
572
Radeon HD 6950
Radeon HD 3870
Architecture
TeraScale 3 (2010−2013)
TeraScale (2005−2013)
GPU code name
Cayman
RV670
Market segment
Desktop
Desktop
Release date
December 2010
November 2007
Bus support
PCIe 2.0 x16
-
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
2x 6-pin
1x 6-pin
Boost clock speed
800 MHz
-
Core clock speed
-
777 MHz
Floating-point performance
2,252.8 gflops
497.3 gflops
Manufacturing process technology
40 nm
55 nm
Number of transistors
2,640 million
666 million
Pipelines / CUDA cores
1408
320
Power consumption (TDP)
500 Watt
106 Watt
Texture fill rate
70.40
12.43
Memory type
GDDR5
GDDR4
Maximum RAM amount
2 GB
512 MB
Memory bus width
256 Bit
256 Bit
Memory clock speed
1250 MHz
2252 MHz
Memory bandwidth
-
72.06 GB/s
Display Connectors
2x DVI, 1x HDMI, 2x mini-DisplayPort
2x DVI, 1x S-Video
Eyefinity
1
-
HDMI
+
-
DisplayPort support
-
-
DirectX
DirectX® 11
10.1 (10_1)
Mantle
-
-
OpenCL
1.2
N/A
OpenGL
4.4
3.3
Shader Model
5.0
4.1
Vulkan
-
N/A
AppAcceleration
-
-
CrossFire
1
-
Enduro
-
-
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-