GeForce RTX 4090 vs Radeon HD 4855
We compared two Desktop platform GPUs: 24GB VRAM GeForce RTX 4090 and 512MB VRAM Radeon HD 4855 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
GeForce RTX 4090 's Advantages
Released 12 years and 8 months late
Boost Clock2520MHz
More VRAM (24GB vs 512GB)
Larger VRAM bandwidth (1.01TB/s vs 115.2GB/s)
15744 additional rendering cores
Radeon HD 4855 's Advantages
Lower TDP (110W vs 450W)
Score
Benchmark
FP32 (float)
GeForce RTX 4090
+11120%
82580
Radeon HD 4855
736
Graphics Card
Sep 2022
Release Date
Jan 2010
GeForce 40
Generation
Radeon R700
Desktop
Type
Desktop
PCIe 4.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
2235 MHz
Base Clock
-
2520 MHz
Boost Clock
-
1313 MHz
Memory Clock
900 MHz
Memory
24GB
Memory Size
512MB
GDDR6X
Memory Type
GDDR5
384bit
Memory Bus
256bit
1.01TB/s
Bandwidth
115.2GB/s
Render Config
-
Compute Units
8
128
SM Count
-
16384
Shading Units
640
512
TMUs
32
176
ROPs
16
512
Tensor Cores
-
128
RT Cores
-
128 KB (per SM)
L1 Cache
16 KB (per CU)
72 MB
L2 Cache
256 KB
Theoretical Performance
443.5 GPixel/s
Pixel Rate
9.200 GPixel/s
1290 GTexel/s
Texture Rate
18.40 GTexel/s
82.58 TFLOPS
FP16 (half)
-
82.58 TFLOPS
FP32 (float)
736.0 GFLOPS
1290 GFLOPS
FP64 (double)
147.2 GFLOPS
Board Design
450W
TDP
110W
850 W
Suggested PSU
300 W
1x HDMI 2.1
3x DisplayPort 1.4a
Outputs
1x DVI
1x HDMI 1.3a
1x VGA
1x 16-pin
Power Connectors
1x 6-pin
Graphics Processor
AD102
GPU Name
RV770
AD102-300-A1
GPU Variant
RV770 PRO
(215-0669065)
Ada Lovelace
Architecture
TeraScale
TSMC
Foundry
TSMC
5 nm
Process Size
55 nm
76.3 billion
Transistors
0.956 billion
609 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
8.9
CUDA
-
6.8
Shader Model
4.1