AMD Radeon RX 8800 XT vs NVIDIA B300
GPU Specs Compare
Graphics Card
Release Date
Unknown
Sep 2025
Generation
Navi IV(RX 8000)
Server Blackwell
Type
Desktop
Desktop
Bus Interface
PCIe 4.0 x16
PCIe 5.0 x16
Clock Speeds
Base Clock
1295 MHz
1665 MHz
Boost Clock
2430 MHz
2032 MHz
Memory Clock
2438 MHz
2000 MHz
Memory
Memory Size
16GB
144GB
Memory Type
GDDR6
HBM3e
Memory Bus
256bit
4096bit
Bandwidth
624.1GB/s
4.10TB/s
Render Config
Compute Units
64
-
Shading Units
4096
18944
TMUs
256
592
ROPs
96
24
RT Cores
64
-
L1 Cache
128 KB per Array
256 KB (per SM)
L2 Cache
4 MB
50 MB
L3 Cache
64 MB
-
SM Count
-
148
Tensor Cores
-
592
Theoretical Performance
Pixel Rate
233.3 GPixel/s
48.77 GPixel/s
Texture Rate
622.1 GTexel/s
1202.9 GTexel/s
FP16 (half)
39.81 TFLOPS
1231.8 TFLOPS
FP32 (float)
19.91 TFLOPS
76.99 TFLOPS
FP64 (double)
622.1 GFLOPS
1202.9 GFLOPS
Graphics Processor
GPU Name
Navi 48
GB110
GPU Variant
Navi 48 XT
-
Architecture
RDNA 4.0
Blackwell Ultra
Foundry
TSMC
TSMC
Process Size
4 nm
5 nm
Transistors
Unknown
104 billion
Die Size
Unknown
Unknown
Board Design
TDP
220W
1400W
Suggested PSU
550 W
1800 W
Outputs
1x HDMI 2.1a3x DisplayPort 2.1
No outputs
Power Connectors
2x 8-pin
-
Graphics Features
DirectX
12 Ultimate (12_2)
N/A
OpenGL
4.6
N/A
OpenCL
2.2
3.0
Vulkan
1.3
N/A
Shader Model
6.8
N/A
CUDA
-
10.3