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
RTX A4000
CORE STATE
GA104
VRAM
16 GB
CLOCK SPEED
1560 MHz
TDP
140 W
BUS WIDTH
256 bit
ARCHITECTURE
Ampere
PROCESS
8 nm
LAUNCH DATE
2021
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 A4000
Core Specs
Shading Units
4,608
6,144
+33.3%
Shaders
4,608
6,144
+33.3%
TMUs
288
192
-33.3%
ROPs
128
96
-25.0%
Compute Units
72
—
SM Count
—
48
Clocks
Base Clock
1825 MHz
735 MHz
Boost Clock
2250 MHz
1560 MHz
Game Clock
2015 MHz
—
Memory Clock
2000 MHz
16 Gbps effective
1750 MHz
14 Gbps effective
Memory
Memory Size
16 GB
16 GB
VRAM (MB)
16,384
16,384
0.0%
Memory Type
GDDR6
GDDR6
Memory Bus
256 bit
256 bit
Bandwidth
512.0 GB/s
448.0 GB/s
Cache
L1 Cache
128 KB per Array
128 KB (per SM)
L2 Cache
4 MB
4 MB
L3 Cache
128 MB
—
L0 Cache
32 KB per WGP
—
Performance
Pixel Rate
288.0 GPixel/s
149.8 GPixel/s
Texture Rate
648.0 GTexel/s
299.5 GTexel/s
FP32 (TFLOPS)
20.74 TFLOPS
19.17 TFLOPS
FP64 (TFLOPS)
1,296.0 GFLOPS (1:16)
299.5 GFLOPS (1:64)
FP16 (TFLOPS)
41.47 TFLOPS (2:1)
19.17 TFLOPS (1:1)
AI/RT
RT Cores
72
48
-33.3%
Tensor Cores
—
192
Power
TDP
300 W
140 W
TDP (W)
300
140
-53.3%
Suggested PSU
700 W
300 W
Power Connectors
2x 8-pin
1x 6-pin
Architecture
Architecture
RDNA 2.0
Ampere
GPU Name
Navi 21
GA104
Generation
Navi II
(RX 6000)
Workstation Ampere
(Ax000)
Process Size
7 nm
8 nm
Transistors
26,800 million
17,400 million
Die Size
520 mm²
392 mm²
Foundry
TSMC
Samsung
Density
51.5M / mm²
44.4M / 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
—
8.6
Shader Model
6.8
6.8
Physical
Slot Width
Dual-slot
Single-slot
Length
267 mm
10.5 inches
241 mm
9.5 inches
Height
120 mm
4.7 inches
112 mm
4.4 inches
Outputs
1x HDMI 2.12x DisplayPort 1.4a1x USB Type-C
4x DisplayPort 1.4a
Bus Interface
PCIe 4.0 x16
PCIe 4.0 x16
Other
Launch Price
649 USD
—
Production
End-of-life
End-of-life
Predecessor
Navi
Quadro Turing
Successor
Navi III
Workstation Ada