Intel Arc A770 vs ATI Radeon HD 4855
We compared two Desktop platform GPUs: 16GB VRAM Arc A770 and 512MB VRAM Radeon HD 4855 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Intel Arc A770 's Advantages
Released 12 years and 9 months late
Boost Clock2400MHz
More VRAM (16GB vs 512GB)
Larger VRAM bandwidth (512.0GB/s vs 115.2GB/s)
3456 additional rendering cores
ATI Radeon HD 4855 's Advantages
Lower TDP (110W vs 225W)
Score
Benchmark
FP32 (float)
Arc A770
+2571%
19.66 TFLOPS
Radeon HD 4855
0.736 TFLOPS
Graphics Card
Oct 2022
Release Date
Jan 2010
Alchemist(Arc 7)
Generation
Radeon R700
Desktop
Type
Desktop
PCIe 4.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
2100 MHz
Base Clock
-
2400 MHz
Boost Clock
-
2000 MHz
Memory Clock
900 MHz
Memory
16GB
Memory Size
512MB
GDDR6
Memory Type
GDDR5
256bit
Memory Bus
256bit
512.0GB/s
Bandwidth
115.2GB/s
Render Config
-
Compute Units
8
-
-
-
4096
Shading Units
640
256
TMUs
32
128
ROPs
16
512
Tensor Cores
-
32
RT Cores
-
-
L1 Cache
16 KB (per CU)
16 MB
L2 Cache
256 KB
-
-
-
Theoretical Performance
307.2 GPixel/s
Pixel Rate
9.200 GPixel/s
614.4 GTexel/s
Texture Rate
18.40 GTexel/s
39.32 TFLOPS
FP16 (half)
-
19.66 TFLOPS
FP32 (float)
736.0 GFLOPS
2.458 TFLOPS
FP64 (double)
147.2 GFLOPS
Board Design
225W
TDP
110W
550 W
Suggested PSU
300 W
1x HDMI 2.13x DisplayPort 2.0
Outputs
1x DVI
1x HDMI 1.3a
1x VGA
1x 6-pin + 1x 8-pin
Power Connectors
1x 6-pin
Graphics Processor
DG2-512
GPU Name
RV770
ACM-G10
GPU Variant
RV770 PRO
(215-0669065)
Generation 12.7
Architecture
TeraScale
TSMC
Foundry
TSMC
6 nm
Process Size
55 nm
21.7 billion
Transistors
0.956 billion
406 mm²
Die Size
256 mm²
Graphics Features
12 Ultimate (12_2)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3
3.0
OpenCL
1.1
1.3
Vulkan
N/A
-
-
-
6.6
Shader Model
4.1
