Radeon HD 4870 and Radeon HD 6950 - video card comparison
Passmark - benchmark score Radeon HD 4870 vs Radeon HD 6950
Radeon HD 4870
1411
Radeon HD 6950
2693
Radeon HD 4870
Radeon HD 6950
Architecture
TeraScale (2005−2013)
TeraScale 3 (2010−2013)
GPU code name
RV770
Cayman
Market segment
Desktop
Desktop
Release date
June 2008
December 2010
Bus support
-
PCIe 2.0 x16
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
2x 6-pin
2x 6-pin
Boost clock speed
-
800 MHz
Core clock speed
750 MHz
-
Floating-point performance
1,200.0 gflops
2,252.8 gflops
Manufacturing process technology
55 nm
40 nm
Number of transistors
956 million
2,640 million
Pipelines / CUDA cores
800
1408
Power consumption (TDP)
150 Watt
500 Watt
Texture fill rate
30.00
70.40
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
2 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
3600 MHz
1250 MHz
Memory bandwidth
115.2 GB/s
-
Display Connectors
2x DVI, 1x S-Video
2x DVI, 1x HDMI, 2x mini-DisplayPort
Eyefinity
-
1
HDMI
-
+
DisplayPort support
-
-
DirectX
10.1 (10_1)
DirectX® 11
Mantle
-
-
OpenCL
1.1
1.2
OpenGL
3.3
4.4
Shader Model
4.1
5.0
Vulkan
N/A
-
AppAcceleration
-
-
CrossFire
-
1
Enduro
-
-
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-