Radeon HD 7870 GHz Edition vs Radeon HD 3550
We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 GHz Edition and 512MB VRAM Radeon HD 3550 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon HD 7870 GHz Edition 's Advantages
Released 3 years and 7 months late
More VRAM (2GB vs 512GB)
Larger VRAM bandwidth (153.6GB/s vs 6.336GB/s)
1240 additional rendering cores
Radeon HD 3550 's Advantages
Lower TDP (30W vs 175W)
Score
Benchmark
FP32 (float)
Radeon HD 7870 GHz Edition
+5233%
2560
Radeon HD 3550
48
Graphics Card
Mar 2012
Release Date
Aug 2008
Southern Islands
Generation
Radeon R600
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
1200 MHz
Memory Clock
396 MHz
Memory
2GB
Memory Size
512MB
GDDR5
Memory Type
DDR2
256bit
Memory Bus
64bit
153.6GB/s
Bandwidth
6.336GB/s
Render Config
20
Compute Units
2
1280
Shading Units
40
80
TMUs
4
32
ROPs
4
16 KB (per CU)
L1 Cache
-
512 KB
L2 Cache
64 KB
Theoretical Performance
32.00 GPixel/s
Pixel Rate
2.376 GPixel/s
80.00 GTexel/s
Texture Rate
2.376 GTexel/s
2.560 TFLOPS
FP32 (float)
47.52 GFLOPS
160.0 GFLOPS
FP64 (double)
-
Board Design
175W
TDP
30W
450 W
Suggested PSU
200 W
1x DVI
1x HDMI 1.4a
2x mini-DisplayPort 1.2
Outputs
2x DisplayPort
2x 6-pin
Power Connectors
None
Graphics Processor
Pitcairn
GPU Name
RV620
Pitcairn XT
(215-0828047)
GPU Variant
RV620 PRO
(215-0670006)
GCN 1.0
Architecture
TeraScale
TSMC
Foundry
TSMC
28 nm
Process Size
55 nm
2.8 billion
Transistors
0.181 billion
212 mm²
Die Size
67 mm²
Graphics Features
12 (11_1)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3
1.2
OpenCL
N/A
1.2
Vulkan
N/A
5.1
Shader Model
4.1
