Radeon RX 6800 XT vs Radeon RX 6900 XT OC Formula

Radeon RX 6800 XT
Radeon RX 6900 XT OC Formula $770
4608 Shaders
16GB GDDR6
2250MHz
5120 Shaders
16GB GDDR6
2475MHz
FP32
20.74 TFLOPS
FP32
25.34 TFLOPS
FP16
41.47 TFLOPS
FP16
50.69 TFLOPS
Form Factor
PCIe Card
2.5-Slots
Form Factor
PCIe Card
3.0-Slots
TDP
300W
TDP
390W
Power Connectors
-
2x 8-Pin
-
-
Power Connectors
-
3x 8-Pin
-
-
GB5 OpenCL 156,955
51%
GB5 OpenCL 181,625
59%
GB5 CUDA - N/A
0%
GB5 CUDA - N/A
0%
GB5 Metal 149,520
83%
GB5 Metal 178,805
99%
GB5 Vulkan 100,755
49%
GB5 Vulkan 125,445
61%
OCT 2020.1 - N/A
0%
OCT 2020.1 - N/A
0%
OCT Metal 355
60%
OCT Metal 425
72%
Manufacturer
AMD
Manufacturer
ASRock
Chip Designer
AMD
Chip Designer
AMD
Architecture
RDNA 2
Architecture
RDNA 2
Family
Radeon RX 6000
Family
Radeon RX 6000
Codename
Sienna Cichlid
Navi 21
Variant
Navi 21 XT
Codename
Sienna Cichlid
Navi 21
Variant
Navi 21 XTXH
Market Segment
Desktop
Market Segment
Desktop
Release Date
11/18/2020
Release Date
12/8/2020
Foundry
TSMC
-
Foundry
TSMC
-
Fabrication Node
N7
-
Fabrication Node
N7
-
Die Size
520 mm²
-
Die Size
520 mm²
-
Transistor Count
26.8 Billion
-
Transistor Count
26.8 Billion
-
Transistor Density
51.56M/mm²
-
Transistor Density
51.56M/mm²
-
Form
PCIe Card
Form
PCIe Card
Shading Units
4608 Shaders
-
Shading Units
5120 Shaders
-
Texture Mapping Units
288 TMUs
Texture Mapping Units
320 TMUs
Render Output Units
128 ROPs
Render Output Units
128 ROPs
-
-
-
-
Ray-Tracing Cores
72 RT-Cores
Ray-Tracing Cores
80 RT-Cores
-
-
-
-
Compute Units
72 CUs
Compute Units
80 CUs
-
-
-
-
Graphics Processing Clusters
4 GPCs
Graphics Processing Clusters
4 GPCs
-
-
1825MHz Base
2250MHz
-
-
2125MHz Base
2475MHz
-
-
-
-
-
-
-
-
-
-
FP16
41.47 TFLOPS
-
FP16
50.69 TFLOPS
-
-
-
-
-
-
-
FP32
20.74 TFLOPS
FP32
25.34 TFLOPS
-
-
-
-
FP64
1.3 TFLOPS
-
FP64
1.58 TFLOPS
-
-
-
-
-
-
-
-
-
-
-
Pixel Fillrate
288 GPixel/s
Pixel Fillrate
316.8 GPixel/s
-
-
-
-
Texture Fillrate
648 GTexel/s
Texture Fillrate
792 GTexel/s
L0
32KB/WGP
L0
32KB/WGP
L1
-
-
-
128KB/Array
L1
-
-
-
128KB/Array
L2
4MB Shared
L2
4MB Shared
L3
128MB Shared
1.66TB/s
L3
128MB Shared
1.66TB/s
16GB
GDDR6
-
16GB
GDDR6
-
Bus Width
256Bit
Bus Width
256Bit
Clock
2000MHz
Transfer Rate
16GT/s
Bandwidth
512GB/s
Clock
2000MHz
Transfer Rate
16GT/s
Bandwidth
512GB/s
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
TDP
300W
TDP
390W
Temp
110°C Max
Temp
110°C Max
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
2x DisplayPort 1.4
-
-
-
-
-
-
-
-
-
-
-
1x HDMI 2.1
1x USB-C + DP
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
3x DisplayPort 1.4
-
-
-
-
-
-
-
-
-
-
-
1x HDMI 2.1
-
-
Max Resolution
7680x4320
Max Resolution
7680x4320
Max Resolution Refresh Rate
120Hz
Max Resolution Refresh Rate
120Hz
Variable Refresh Rate
-
FreeSync
-
Variable Refresh Rate
-
FreeSync
-
Display Stream Compression (DSC)
Supported
Display Stream Compression (DSC)
Supported
Multi Monitor Support
4
Multi Monitor Support
4
Content Protection
HDCP 2.3
Content Protection
HDCP 2.3
Model
VCN 3.0
Model
VCN 3.0
Codec
-
-
-
-
-
-
-
-
AVC (H.264)
HEVC (H.265)
-
-
-
-
Codec
-
-
-
-
-
-
-
-
AVC (H.264)
HEVC (H.265)
-
-
-
-
Model
VCN 3.0
Model
VCN 3.0
Codec
MPEG-1
MPEG-2
MPEG-4
JPEG
VC-1
-
VP9
-
AVC (H.264)
HEVC (H.265)
-
AV1
-
-
Codec
MPEG-1
MPEG-2
MPEG-4
JPEG
VC-1
-
VP9
-
AVC (H.264)
HEVC (H.265)
-
AV1
-
-
Direct X
12
Direct 3D
12_2
Direct X
12
Direct 3D
12_2
OpenGL
4.6
OpenCL
2.1
Vulkan
1.2
OpenGL
4.6
OpenCL
2.1
Vulkan
1.2
Shader Model
6.5
-
-
GFX
10.3
-
-
-
-
Shader Model
6.5
-
-
GFX
10.3
-
-
-
-
-
-
-
3x Fans
-
-
-
3x Fans
Power Connectors
-
-
-
2x 8-Pin
-
-
-
Power Connectors
-
-
-
3x 8-Pin
-
-
-
Slots Required
2.5
PCIe Version
4.0
PCIe Lanes
16
Slots Required
3.0
PCIe Version
4.0
PCIe Lanes
16
Multi GPU Support
Supported
Type
Bridgeless
Multi GPU Support
Supported
Type
Bridgeless
Height
120 mm (4.72 in)
Width
267 mm (10.51 in)
Depth
50 mm (1.97 in)
Height
137 mm (5.39 in)
Width
332 mm (13.07 in)
Depth
61 mm (2.4 in)
Change Results