Radeon RX 550 640SP vs Radeon HD 4855
We compared two Desktop platform GPUs: 2GB VRAM Radeon RX 550 640SP and 512MB VRAM Radeon HD 4855 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon RX 550 640SP Advantages
Released 7 years and 9 months late
Boost Clock1071MHz
More VRAM (2GB vs 512GB)
Lower TDP (60W vs 110W)
Radeon HD 4855 Advantages
Larger VRAM bandwidth (115.2GB/s vs 96.00GB/s)
Score
Benchmark
FP32 (float)
Radeon RX 550 640SP
+86%
1371
Radeon HD 4855
736
Graphics Card
Oct 2017
Release Date
Jan 2010
Polaris
Generation
Radeon R700
Desktop
Type
Desktop
PCIe 3.0 x8
Bus Interface
PCIe 2.0 x16
Clock Speeds
1019 MHz
Base Clock
-
1071 MHz
Boost Clock
-
1500 MHz
Memory Clock
900 MHz
Memory
2GB
Memory Size
512MB
GDDR5
Memory Type
GDDR5
128bit
Memory Bus
256bit
96.00GB/s
Bandwidth
115.2GB/s
Render Config
10
Compute Units
8
640
Shading Units
640
40
TMUs
32
16
ROPs
16
16 KB (per CU)
L1 Cache
16 KB (per CU)
1024 KB
L2 Cache
256 KB
Theoretical Performance
17.14 GPixel/s
Pixel Rate
9.200 GPixel/s
42.84 GTexel/s
Texture Rate
18.40 GTexel/s
1371 GFLOPS
FP16 (half)
-
1371 GFLOPS
FP32 (float)
736.0 GFLOPS
85.68 GFLOPS
FP64 (double)
147.2 GFLOPS
Board Design
60W
TDP
110W
250 W
Suggested PSU
300 W
1x DVI
1x HDMI 2.0b
1x DisplayPort 1.4a
1x HDMI 2.0b
1x DisplayPort 1.4a
Outputs
1x DVI
1x HDMI 1.3a
1x VGA
1x HDMI 1.3a
1x VGA
None
Power Connectors
1x 6-pin
Graphics Processor
Baffin
GPU Name
RV770
Baffin LE
GPU Variant
RV770 PRO
(215-0669065)
(215-0669065)
GCN 4.0
Architecture
TeraScale
GlobalFoundries
Foundry
TSMC
14 nm
Process Size
55 nm
3 billion
Transistors
0.956 billion
123 mm²
Die Size
256 mm²
Graphics Features
12 (12_0)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3
2.1
OpenCL
1.1
1.2
Vulkan
N/A
6.4
Shader Model
4.1
