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GPU Comparison
AMD Radeon RX 6700 XT vs ATI Radeon HD 4855
AMD Radeon RX 6700 XT vs ATI Radeon HD 4855
VS
AMD Radeon RX 6700 XT
ATI Radeon HD 4855
We compared two Desktop platform GPUs: 12GB VRAM Radeon RX 6700 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 6700 XT 's Advantages
Released 11 years and 2 months late
Boost Clock2581MHz
Larger VRAM bandwidth (384.0GB/s vs 115.2GB/s)
1920 additional rendering cores
ATI Radeon HD 4855 's Advantages
Lower TDP (110W vs 230W)
Score
Benchmark
FP32 (float)
Radeon RX 6700 XT
+1694%
13.21 TFLOPS
Radeon HD 4855
0.736 TFLOPS
Radeon RX 6700 XT
VS
Radeon HD 4855
Graphics Card
Mar 2021
Release Date
Jan 2010
Navi II
Generation
Radeon R700
Desktop
Type
Desktop
PCIe 4.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
2321 MHz
Base Clock
-
2581 MHz
Boost Clock
-
2000 MHz
Memory Clock
900 MHz
Memory
12GB
Memory Size
512MB
GDDR6
Memory Type
GDDR5
192bit
Memory Bus
256bit
384.0GB/s
Bandwidth
115.2GB/s
Render Config
-
SM Count
-
40
Compute Units
8
2560
Shading Units
640
160
TMUs
32
64
ROPs
16
-
Tensor Cores
-
40
RT Cores
-
128 KB per Array
L1 Cache
16 KB (per CU)
3 MB
L2 Cache
256 KB
Theoretical Performance
165.2 GPixel/s
Pixel Rate
9.200 GPixel/s
413.0 GTexel/s
Texture Rate
18.40 GTexel/s
26.43 TFLOPS
FP16 (half)
-
13.21 TFLOPS
FP32 (float)
736.0 GFLOPS
825.9 GFLOPS
FP64 (double)
147.2 GFLOPS
Graphics Processor
Navi 22
GPU Name
RV770
Navi 22 XT (215-127000006)
GPU Variant
RV770 PRO (215-0669065)
RDNA 2.0
Architecture
TeraScale
TSMC
Foundry
TSMC
7 nm
Process Size
55 nm
17.2 billion
Transistors
0.956 billion
335 mm²
Die Size
256 mm²
Board Design
230W
TDP
110W
550 W
Suggested PSU
300 W
1x HDMI 2.1 3x DisplayPort 1.4a
Outputs
1x DVI 1x HDMI 1.3a 1x VGA
1x 6-pin + 1x 8-pin
Power Connectors
1x 6-pin
Graphics Features
12 Ultimate (12_2)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3
2.1
OpenCL
1.1
1.3
Vulkan
N/A
-
CUDA
-
6.5
Shader Model
4.1
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