Radeon HD 7770 GHz Edition vs Radeon HD 3870
We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 7770 GHz Edition and 512MB VRAM Radeon HD 3870 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon HD 7770 GHz Edition 's Advantages
Released 4 years and 3 months late
More VRAM (1024GB vs 512GB)
320 additional rendering cores
Lower TDP (80W vs 106W)
Radeon HD 3870 's Advantages
Larger VRAM bandwidth (72.06GB/s vs 72.00GB/s)
Score
Benchmark
FP32 (float)
Radeon HD 7770 GHz Edition
+157%
1280
Radeon HD 3870
497
Graphics Card
Feb 2012
Release Date
Nov 2007
Southern Islands
Generation
Radeon R600
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
1125 MHz
Memory Clock
1126 MHz
Memory
1024MB
Memory Size
512MB
GDDR5
Memory Type
GDDR4
128bit
Memory Bus
256bit
72.00GB/s
Bandwidth
72.06GB/s
Render Config
10
Compute Units
4
640
Shading Units
320
40
TMUs
16
16
ROPs
16
16 KB (per CU)
L1 Cache
-
256 KB
L2 Cache
256 KB
Theoretical Performance
16.00 GPixel/s
Pixel Rate
12.43 GPixel/s
40.00 GTexel/s
Texture Rate
12.43 GTexel/s
1280 GFLOPS
FP32 (float)
497.3 GFLOPS
80.00 GFLOPS
FP64 (double)
99.46 GFLOPS
Board Design
80W
TDP
106W
250 W
Suggested PSU
300 W
1x DVI
1x HDMI 1.4a
2x mini-DisplayPort 1.2
Outputs
2x DVI
1x S-Video
1x 6-pin
Power Connectors
1x 6-pin
Graphics Processor
Cape Verde
GPU Name
RV670
Cape Verde XT
GPU Variant
RV670 XT
(215-0708005)
GCN 1.0
Architecture
TeraScale
TSMC
Foundry
TSMC
28 nm
Process Size
55 nm
1.5 billion
Transistors
0.666 billion
123 mm²
Die Size
192 mm²
Graphics Features
12 (11_1)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3 (full)
4.0 (partial)
1.2
OpenCL
N/A
1.2
Vulkan
N/A
5.1
Shader Model
4.1
