GPU Comparison
RADEON
AMD Radeon RX 6800 XT
CORE STATE
Navi 21
VRAM
16 GB
CLOCK SPEED
2250 MHz
TDP
300 W
BUS WIDTH
256 bit
ARCHITECTURE
RDNA 2.0
PROCESS
7 nm
LAUNCH DATE
2020
VS
GEFORCE
GeForce RTX 4090
CORE STATE
AD102
VRAM
24 GB
CLOCK SPEED
2520 MHz
TDP
450 W
BUS WIDTH
384 bit
ARCHITECTURE
Ada Lovelace
PROCESS
5 nm
LAUNCH DATE
2022
PERFORMANCE BENCHMARKS
3dmark_3dmark_steel_nomad_dx12
geekbench_metal
geekbench_opencl
geekbench_vulkan
passmark_directx_10
passmark_directx_11
passmark_directx_12
passmark_directx_9
passmark_g2d
passmark_g3d
passmark_gpu_compute
DETAILED SPECIFICATIONS
SPECIFICATION
RX 6800 XT
RTX 4090
Core Specs
Shading Units
4,608
16,384
+255.6%
Shaders
4,608
16,384
+255.6%
TMUs
288
512
+77.8%
ROPs
128
176
+37.5%
Compute Units
72
—
SM Count
—
128
Clocks
Base Clock
1825 MHz
2235 MHz
Boost Clock
2250 MHz
2520 MHz
Game Clock
2015 MHz
—
Memory Clock
2000 MHz
16 Gbps effective
1313 MHz
21 Gbps effective
Memory
Memory Size
16 GB
24 GB
VRAM (MB)
16,384
24,576
+50.0%
Memory Type
GDDR6
GDDR6X
Memory Bus
256 bit
384 bit
Bandwidth
512.0 GB/s
1.01 TB/s
Cache
L1 Cache
128 KB per Array
128 KB (per SM)
L2 Cache
4 MB
72 MB
L3 Cache
128 MB
—
L0 Cache
32 KB per WGP
—
Performance
Pixel Rate
288.0 GPixel/s
443.5 GPixel/s
Texture Rate
648.0 GTexel/s
1,290.2 GTexel/s
FP32 (TFLOPS)
20.74 TFLOPS
82.58 TFLOPS
FP64 (TFLOPS)
1,296.0 GFLOPS (1:16)
1,290.2 GFLOPS (1:64)
FP16 (TFLOPS)
41.47 TFLOPS (2:1)
82.58 TFLOPS (1:1)
AI/RT
RT Cores
72
128
+77.8%
Tensor Cores
—
512
Power
TDP
300 W
450 W
TDP (W)
300
450
+50.0%
Suggested PSU
700 W
850 W
Power Connectors
2x 8-pin
1x 16-pin
Architecture
Architecture
RDNA 2.0
Ada Lovelace
GPU Name
Navi 21
AD102
Generation
Navi II
(RX 6000)
GeForce 40
Process Size
7 nm
5 nm
Transistors
26,800 million
76,300 million
Die Size
520 mm²
609 mm²
Foundry
TSMC
TSMC
Density
51.5M / mm²
125.3M / mm²
API Support
DirectX
12 Ultimate (12_2)
12 Ultimate (12_2)
OpenGL
4.6
4.6
Vulkan
1.4
1.4
OpenCL
2.1
3.0
CUDA
—
8.9
Shader Model
6.8
6.8
Physical
Slot Width
Dual-slot
Triple-slot
Length
267 mm
10.5 inches
304 mm
12 inches
Height
120 mm
4.7 inches
137 mm
5.4 inches
Outputs
1x HDMI 2.12x DisplayPort 1.4a1x USB Type-C
1x HDMI 2.13x DisplayPort 1.4a
Bus Interface
PCIe 4.0 x16
PCIe 4.0 x16
Other
Launch Price
649 USD
1,599 USD
Production
End-of-life
End-of-life
Predecessor
Navi
GeForce 30
Successor
Navi III
GeForce 50