Radeon HD 6790 vs Radeon HD 4700
We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6790 and 512MB VRAM Radeon HD 4700 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon HD 6790 Advantages
Released 1 years and 2 months late
More VRAM (1024GB vs 512GB)
Larger VRAM bandwidth (134.4GB/s vs 12.80GB/s)
480 additional rendering cores
Radeon HD 4700 Advantages
Lower TDP (50W vs 150W)
Score
Benchmark
FP32 (float)
Radeon HD 6790
+250%
1344
Radeon HD 4700
384
Graphics Card
Apr 2011
Release Date
Feb 2010
Northern Islands
Generation
Radeon R700
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
1050 MHz
Memory Clock
400 MHz
Memory
1024MB
Memory Size
512MB
GDDR5
Memory Type
DDR2
256bit
Memory Bus
128bit
134.4GB/s
Bandwidth
12.80GB/s
Render Config
10
Compute Units
4
800
Shading Units
320
40
TMUs
32
16
ROPs
8
8 KB (per CU)
L1 Cache
16 KB (per CU)
512 KB
L2 Cache
128 KB
Theoretical Performance
13.44 GPixel/s
Pixel Rate
4.800 GPixel/s
33.60 GTexel/s
Texture Rate
19.20 GTexel/s
1344 GFLOPS
FP32 (float)
384.0 GFLOPS
Board Design
150W
TDP
50W
450 W
Suggested PSU
250 W
2x DVI
1x HDMI 1.3a
1x DisplayPort 1.1
1x HDMI 1.3a
1x DisplayPort 1.1
Outputs
2x DVI
1x S-Video
1x S-Video
2x 6-pin
Power Connectors
-
Graphics Processor
Barts
GPU Name
RV730
Barts LE
(215-0798002)
(215-0798002)
GPU Variant
RV730 CE
TeraScale 2
Architecture
TeraScale
TSMC
Foundry
TSMC
40 nm
Process Size
55 nm
1.7 billion
Transistors
0.514 billion
255 mm²
Die Size
146 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
