AMD Radeon HD 7850 vs ATI Radeon HD 4700
We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7850 and 512MB VRAM Radeon HD 4700 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 7850 's Advantages
Released 2 years and 1 months late
More VRAM (2GB vs 512GB)
Larger VRAM bandwidth (153.6GB/s vs 12.80GB/s)
704 additional rendering cores
ATI Radeon HD 4700 's Advantages
Lower TDP (50W vs 130W)
Score
Benchmark
FP32 (float)
Radeon HD 7850
+358%
1.761 TFLOPS
Radeon HD 4700
0.384 TFLOPS
Graphics Card
Mar 2012
Release Date
Feb 2010
Southern Islands
Generation
Radeon R700
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
-
-
-
-
-
1200 MHz
Memory Clock
400 MHz
Memory
2GB
Memory Size
512MB
GDDR5
Memory Type
DDR2
256bit
Memory Bus
128bit
153.6GB/s
Bandwidth
12.80GB/s
Render Config
16
Compute Units
4
-
-
-
1024
Shading Units
320
64
TMUs
32
32
ROPs
8
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
512 KB
L2 Cache
128 KB
-
-
-
Theoretical Performance
27.52 GPixel/s
Pixel Rate
4.800 GPixel/s
55.04 GTexel/s
Texture Rate
19.20 GTexel/s
-
-
-
1.761 TFLOPS
FP32 (float)
384.0 GFLOPS
110.1 GFLOPS
FP64 (double)
-
Board Design
130W
TDP
50W
300 W
Suggested PSU
250 W
1x DVI
1x HDMI 1.4a
2x mini-DisplayPort 1.2
Outputs
2x DVI
1x S-Video
1x 6-pin
Power Connectors
-
Graphics Processor
Pitcairn
GPU Name
RV730
Pitcairn PRO
(215-0828062)
GPU Variant
RV730 CE
GCN 1.0
Architecture
TeraScale
TSMC
Foundry
TSMC
28 nm
Process Size
55 nm
2.8 billion
Transistors
0.514 billion
212 mm²
Die Size
146 mm²
Graphics Features
12 (11_1)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3
1.2
OpenCL
1.1
1.2
Vulkan
N/A
-
-
-
5.1
Shader Model
4.1
