Radeon HD 6950 vs Radeon HD 4850
We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6950 and 512MB VRAM Radeon HD 4850 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon HD 6950 Advantages
Released 2 years and 6 months late
More VRAM (2GB vs 512GB)
Larger VRAM bandwidth (160.0GB/s vs 63.55GB/s)
608 additional rendering cores
Radeon HD 4850 Advantages
Lower TDP (110W vs 200W)
Score
Benchmark
FP32 (float)
Radeon HD 6950
+125%
2253
Radeon HD 4850
1000
Graphics Card
Dec 2010
Release Date
Jun 2008
Northern Islands
Generation
Radeon R700
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
1250 MHz
Memory Clock
993 MHz
Memory
2GB
Memory Size
512MB
GDDR5
Memory Type
GDDR3
256bit
Memory Bus
256bit
160.0GB/s
Bandwidth
63.55GB/s
Render Config
22
Compute Units
10
1408
Shading Units
800
88
TMUs
40
32
ROPs
16
8 KB (per CU)
L1 Cache
16 KB (per CU)
512 KB
L2 Cache
256 KB
Theoretical Performance
25.60 GPixel/s
Pixel Rate
10.00 GPixel/s
70.40 GTexel/s
Texture Rate
25.00 GTexel/s
2.253 TFLOPS
FP32 (float)
1000 GFLOPS
563.2 GFLOPS
FP64 (double)
200.0 GFLOPS
Board Design
200W
TDP
110W
550 W
Suggested PSU
300 W
2x DVI
1x HDMI 1.4a
2x mini-DisplayPort 1.2
1x HDMI 1.4a
2x mini-DisplayPort 1.2
Outputs
2x DVI
1x S-Video
1x S-Video
2x 6-pin
Power Connectors
1x 6-pin
Graphics Processor
Cayman
GPU Name
RV770
Cayman PRO
(215-0807019)
(215-0807019)
GPU Variant
RV770 PRO
(215-0669065)
(215-0669065)
TeraScale 3
Architecture
TeraScale
TSMC
Foundry
TSMC
40 nm
Process Size
55 nm
2.64 billion
Transistors
0.956 billion
389 mm²
Die Size
256 mm²
Graphics Features
11.2 (11_0)
DirectX
10.1 (10_1)
4.4
OpenGL
3.3
1.2
OpenCL
1.1
N/A
Vulkan
N/A
5.0
Shader Model
4.1
