AMD Radeon RX 7700 XT vs ATI Radeon HD 4855
We compared two Desktop platform GPUs: 12GB VRAM Radeon RX 7700 XT and 512MB VRAM Radeon HD 4855 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon RX 7700 XT 's Advantages
Released 13 years and 7 months late
Boost Clock2544MHz
More VRAM (12GB vs 512GB)
Larger VRAM bandwidth (432.0GB/s vs 115.2GB/s)
2816 additional rendering cores
ATI Radeon HD 4855 's Advantages
Lower TDP (110W vs 245W)
Score
Benchmark
FP32 (float)
Radeon RX 7700 XT
+4678%
35.17 TFLOPS
Radeon HD 4855
0.736 TFLOPS
Graphics Card
Aug 2023
Release Date
Jan 2010
Navi III
Generation
Radeon R700
Desktop
Type
Desktop
PCIe 4.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
1435 MHz
Base Clock
-
2544 MHz
Boost Clock
-
2250 MHz
Memory Clock
900 MHz
Memory
12GB
Memory Size
512MB
GDDR6
Memory Type
GDDR5
192bit
Memory Bus
256bit
432.0GB/s
Bandwidth
115.2GB/s
Render Config
54
Compute Units
8
-
-
-
3456
Shading Units
640
216
TMUs
32
96
ROPs
16
-
-
-
54
RT Cores
-
128 KB per Array
L1 Cache
16 KB (per CU)
2 MB
L2 Cache
256 KB
48 MB
L3 Cache
-
Theoretical Performance
244.2 GPixel/s
Pixel Rate
9.200 GPixel/s
549.5 GTexel/s
Texture Rate
18.40 GTexel/s
70.34 TFLOPS
FP16 (half)
-
35.17 TFLOPS
FP32 (float)
736.0 GFLOPS
1099 GFLOPS
FP64 (double)
147.2 GFLOPS
Board Design
245W
TDP
110W
550 W
Suggested PSU
300 W
1x HDMI 2.1a
2x DisplayPort 2.1
1x USB Type-C
Outputs
1x DVI
1x HDMI 1.3a
1x VGA
2x 8-pin
Power Connectors
1x 6-pin
Graphics Processor
Navi 32
GPU Name
RV770
Navi 32 XL
(215-180000076)
GPU Variant
RV770 PRO
(215-0669065)
RDNA 3.0
Architecture
TeraScale
TSMC
Foundry
TSMC
5 nm
Process Size
55 nm
28.1 billion
Transistors
0.956 billion
346 mm²
Die Size
256 mm²
Graphics Features
12 Ultimate (12_2)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3
2.2
OpenCL
1.1
1.3
Vulkan
N/A
-
-
-
6.7
Shader Model
4.1
