AMD Radeon RX 8800 XT vs AMD Radeon HD 7990
GPU Specs Compare
Graphics Card
Release Date
Unknown
Apr 2013
Generation
Navi IV(RX 8000)
Southern Islands
Type
Desktop
Desktop
Bus Interface
PCIe 4.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
1295 MHz
950 MHz
Boost Clock
2430 MHz
1000 MHz
Memory Clock
2438 MHz
1500 MHz
Memory
Memory Size
16GB
3GB
Memory Type
GDDR6
GDDR5
Memory Bus
256bit
384bit
Bandwidth
624.1GB/s
288.0GB/s
Render Config
Compute Units
64
32
Shading Units
4096
2048
TMUs
256
128
ROPs
96
32
RT Cores
64
-
L1 Cache
128 KB per Array
16 KB (per CU)
L2 Cache
4 MB
768 KB
L3 Cache
64 MB
-
Theoretical Performance
Pixel Rate
233.3 GPixel/s
32.00 GPixel/s
Texture Rate
622.1 GTexel/s
128.0 GTexel/s
FP16 (half)
39.81 TFLOPS
-
FP32 (float)
19.91 TFLOPS
4.096 TFLOPS
FP64 (double)
622.1 GFLOPS
1024 GFLOPS
Graphics Processor
GPU Name
Navi 48
Malta
GPU Variant
Navi 48 XT
Malta XT(215-0849026)
Architecture
RDNA 4.0
GCN 1.0
Foundry
TSMC
TSMC
Process Size
4 nm
28 nm
Transistors
Unknown
4.313 billion
Die Size
Unknown
365 mm²
Board Design
TDP
220W
375W
Suggested PSU
550 W
750 W
Outputs
1x HDMI 2.1a3x DisplayPort 2.1
1x DVI4x mini-DisplayPort 1.2
Power Connectors
2x 8-pin
2x 8-pin
Graphics Features
DirectX
12 Ultimate (12_2)
12 (11_1)
OpenGL
4.6
4.6
OpenCL
2.2
1.2
Vulkan
1.3
1.2
Shader Model
6.8
5.1