AMD Radeon RX 7800 XT vs AMD Radeon RX 455 OEM
GPU · Specs Compare
Graphics Card
Release Date
Aug 2023
Jun 2016
Generation
Navi III
Arctic Islands
Type
Desktop
Desktop
Bus Interface
PCIe 4.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
1295 MHz
—
Boost Clock
2430 MHz
—
Memory Clock
2438 MHz
1625 MHz
Memory
Memory Size
16GB
2GB
Memory Type
GDDR6
GDDR5
Memory Bus
256bit
128bit
Bandwidth
624.1GB/s
104.0GB/s
Render Config
Compute Units
60
12
Shading Units
3840
768
TMUs
240
48
ROPs
96
16
RT Cores
60
—
L1 Cache
128 KB per Array
16 KB (per CU)
L2 Cache
4 MB
256 KB
L3 Cache
64 MB
—
Theoretical Performance
Pixel Rate
233.3 GPixel/s
16.80 GPixel/s
Texture Rate
583.2 GTexel/s
50.40 GTexel/s
FP16 (half)
74.65 TFLOPS
—
FP32 (float)
37.32 TFLOPS
1.613 TFLOPS
FP64 (double)
1166.4 GFLOPS
100.8 GFLOPS
Graphics Processor
GPU Name
Navi 32
Tobago
GPU Variant
Navi 32 XT(215-180000006)
Tobago PRO(215-0875010)
Architecture
RDNA 3.0
GCN 2.0
Foundry
TSMC
TSMC
Process Size
5 nm
28 nm
Transistors
28.1 billion
2.08 billion
Die Size
346 mm²
160 mm²
Board Design
TDP
263W
100W
Suggested PSU
600 W
300 W
Outputs
1x HDMI 2.1a3x DisplayPort 2.1
1x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
2x 8-pin
1x 6-pin
Graphics Features
DirectX
12 Ultimate (12_2)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
2.2
2.0
Vulkan
1.3
1.2
Shader Model
6.8
6.3
Benchmark
3DMark Time Spy
20,086
—
3DMark Time Spy Extreme
9,448
—
3DMark Speed Way
3,978
—
Shadow of the Tomb Raider 2160p
82
—
Cyberpunk 2077 2160p
38
—
Shadow of the Tomb Raider 1440p
158
—
Cyberpunk 2077 1440p
82
—
Shadow of the Tomb Raider 1080p
234
—
Cyberpunk 2077 1080p
126
—
GTA 5 2160p
140
—
GTA 5 1440p
140
—
GTA 5 1080p
190
—
Horizon Forbidden West 1080p
98
—
Horizon Forbidden West 1440p
81
—
Horizon Forbidden West 2160p
52
—
▲ Specs Compare
Data sourced from official specifications and benchmark tests.