Radeon HD 6770 and Radeon HD 4850 X2 - video card comparison
Passmark - benchmark score Radeon HD 6770 vs Radeon HD 4850 X2
Radeon HD 6770
1286
Radeon HD 4850 X2
1166
Radeon HD 6770
Radeon HD 4850 X2
Architecture
TeraScale 2 (2009−2015)
TeraScale (2005−2013)
GPU code name
Juniper
R700
Market segment
Desktop
Desktop
Release date
January 2011
November 2008
Bus support
PCIe 2.0 x16
-
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
1x 6-pin
1x 6-pin + 1x 8-pin
Boost clock speed
900 MHz
-
Core clock speed
-
625 MHz
Floating-point performance
1,360.0 gflops
2x 1,000.0 gflops
Manufacturing process technology
40 nm
55 nm
Number of transistors
1,040 million
956 million
Pipelines / CUDA cores
800
800
Power consumption (TDP)
108 Watt
250 Watt
Texture fill rate
34.00
25.00
Memory type
GDDR5
GDDR3
Maximum RAM amount
1 GB
512 MB
Memory bus width
128 Bit
256 Bit
Memory clock speed
1050 MHz
1990 MHz
Memory bandwidth
76.8 GB/s
63.68 GB/s
Display Connectors
2x DVI, 1x HDMI, 2x mini-DisplayPort
4x DVI, 1x S-Video
Eyefinity
1
-
HDMI
+
-
DisplayPort support
-
-
DirectX
DirectX® 11
10.1 (10_1)
Mantle
-
-
OpenCL
1.2
1.1
OpenGL
4.4
3.3
Shader Model
5.0
4.1
Vulkan
-
N/A
AppAcceleration
-
-
CrossFire
1
-
Enduro
-
-
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-