GPU comparison with benchmarksThe AMD Radeon RX 6800 XT has 4608 shader units and these clock a maximum of 2.25 GHz which results in an FP32 computing power of 20.74 TFLOPS.
The Gainward GeForce RTX 3090 Phoenix GS has 10496 shader units and these clock at a maximum of 1.73 GHz and achieve an FP32 computing power of 36.21 TFLOPS. |
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GPUThe AMD Radeon RX 6800 XT is equipped with a graphics chip of the RDNA 2 architecture, which has 72 streaming multiprocessors. The graphics card Gainward GeForce RTX 3090 Phoenix GS is based on the Ampere architecture and is equipped with 82 execution units. |
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AMD Radeon RX 6800 XT | GPU | Gainward GeForce RTX 3090 Phoenix GS |
AMD Radeon RX 6800 XT | Based on | NVIDIA GeForce RTX 3090 |
Navi 21 XT | GPU Chip | GA102-300-A1 |
RDNA 2 | Architecture | Ampere |
72 | Streaming Multiprocessors | 82 |
4608 | Shader | 10496 |
128 | Render Output Units | 112 |
288 | Texture Units | 328 |
72 | Raytracing Cores | 82 |
MemoryThe AMD Radeon RX 6800 XT is equipped with a 16 GB large GDDR6 graphics memory, which is equipped with 2.000 GHz clocks. The Gainward GeForce RTX 3090 Phoenix GS has a 24 GB large GDDR6X graphics memory and the memory clock is 1.219GHz. |
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16 GB | Memory Size | 24 GB |
GDDR6 | Memory Type | GDDR6X |
2.000 GHz | Memory Clock | 1.219 GHz |
16.0 Gbps | Memory Speed | 19.5 Gbps |
512 GB/s | Memory bandwidth | 936 GB/s |
256 bit | Memory Interface | 384 bit |
Clock SpeedsThe AMD Radeon RX 6800 XT has a turbo clock of 2.250 GHz. The turbo frequency of the Gainward GeForce RTX 3090 Phoenix GS is 1.725 GHz. |
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1.825 GHz | Base Clock | 1.395 GHz |
2.250 GHz | Boost Clock | 1.725 GHz |
2.02 GHz | Avg (Game) Clock | |
Yes | Overclocking | Yes |
Thermal DesignThe AMD Radeon RX 6800 XT has 2 x 8-Pin connectors through which it is supplied with power. The manufacturer specifies the maximum operating temperature of the graphics card as 100 °C. The Gainward GeForce RTX 3090 Phoenix GS is equipped with a 2 x 8-Pin PCIe power connector that supplies it with power. The maximum operating temperature of the card is 93 °C. |
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300 W | TDP | 350 W |
345 W | TDP (up) | -- |
100 °C | Tjunction max | 93 °C |
2 x 8-Pin | PCIe-Power | 2 x 8-Pin |
Cooler & FansThe graphics processor and graphics memory of the AMD Radeon RX 6800 XT are cooled with a Air cooling. The Gainward GeForce RTX 3090 Phoenix GS is cooled by a Air cooling. |
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Axial | Fan-Type | Axial |
3 x 80 mm | Fan 1 | 3 x 90 mm |
-- | Fan 2 | -- |
Air cooling | Cooler-Type | Air cooling |
0 dB | Noise (Idle) | 0 dB |
37 dB | Noise (Load) | -- |
ConnectivityThe AMD Radeon RX 6800 XT supports the downward compatible copy protection HDCP in version 2.3. The Gainward GeForce RTX 3090 Phoenix GS supports HDCP in version 2.3 and all previous versions. |
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4 | Max. Displays | 4 |
2.3 | HDCP-Version | 2.3 |
1x HDMI v2.1 | HDMI Ports | 1x HDMI v2.1 |
2x DP v1.4a | DP Ports | 3x DP v1.4a |
-- | DVI Ports | -- |
-- | VGA Ports | -- |
1 | USB-C Ports | -- |
FeaturesetThe AMD Radeon RX 6800 XT supports the DirectX standard from Microsoft in version 12_2 (Ultimate). The Gainward GeForce RTX 3090 Phoenix GS supports Microsoft's DirectX version 12_2 (Ultimate). |
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7680x4320 | Max. resolution | 7680x4320 |
12_2 (Ultimate) | DirectX | 12_2 (Ultimate) |
Yes | Raytracing | Yes |
Yes | DLSS / FSR | Yes |
Non addressable LED | LED | Non addressable LED |
Supported Video CodecsThis area lists which video codecs can be decoded or encoded by the graphics cards in hardware. As a result, the power consumption can be reduced due to a lower processor load. |
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Decode / Encode | h264 | Decode / Encode |
Decode / Encode | h265 / HEVC | Decode / Encode |
Decode | AV1 | Decode |
Decode / Encode | VP8 | Decode |
Decode / Encode | VP9 | Decode |
DimensionsThe AMD Radeon RX 6800 XT is -- wide and therefore needs the space of 3 PCIe-Slots in the case. The width of the Gainward GeForce RTX 3090 Phoenix GS is -- and thus requires the space of 3 PCIe-Slots in the PC case. |
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270 mm | Length | 294 mm |
120 mm | Height | 112 mm |
-- | Width | -- |
3 PCIe-Slots | Width (Slots) | 3 PCIe-Slots |
1503 g | Weight | -- |
PCIe 4.0 x 16 | GPU Interface | PCIe 4.0 x 16 |
Additional dataManufactured using the 7 nanometer process, AMD Radeon RX 6800 XT was released in Q4/2020. The Gainward GeForce RTX 3090 Phoenix GS published in Q3/2020 is manufactured with a structure width of 8 nanometers. |
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-- | Part-no | NED3090S19SB-132BX |
Q4/2020 | Release date | Q3/2020 |
799 $ | Launch Price | 1,579 $ |
7 nm | Structure size | 8 nm |
data sheet | Documents | data sheet |
AMD Radeon RX 6800 XT
16 GB GDDR6 |
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Gainward GeForce RTX 3090 Phoenix GS
24 GB GDDR6X |
AMD Radeon RX 6800 XT
16 GB GDDR6 |
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Gainward GeForce RTX 3090 Phoenix GS
24 GB GDDR6X |
AMD Radeon RX 6800 XT
16 GB GDDR6 |
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Gainward GeForce RTX 3090 Phoenix GS
24 GB GDDR6X |
AMD Radeon RX 6800 XT
16 GB GDDR6 |
|||
Gainward GeForce RTX 3090 Phoenix GS
24 GB GDDR6X |
AMD Radeon RX 6800 XT
16 GB GDDR6 |
|||
Gainward GeForce RTX 3090 Phoenix GS
24 GB GDDR6X |
AMD Radeon RX 6800 XT
16 GB GDDR6 |
|||
Gainward GeForce RTX 3090 Phoenix GS
24 GB GDDR6X |
AMD Radeon RX 6800 XT
16 GB GDDR6 |
|||
Gainward GeForce RTX 3090 Phoenix GS
24 GB GDDR6X |
AMD Radeon RX 6800 XT
16 GB GDDR6 |
|||
Gainward GeForce RTX 3090 Phoenix GS
24 GB GDDR6X |
AMD Radeon RX 6800 XT
16 GB GDDR6 |
|||
Gainward GeForce RTX 3090 Phoenix GS
24 GB GDDR6X |
AMD Radeon RX 6800 XT
16 GB GDDR6 |
|||
Gainward GeForce RTX 3090 Phoenix GS
24 GB GDDR6X |
AMD Radeon RX 6800 XT
16 GB GDDR6 |
|||
Gainward GeForce RTX 3090 Phoenix GS
24 GB GDDR6X |
AMD Radeon RX 6800 XT
16 GB GDDR6 |
|||
Gainward GeForce RTX 3090 Phoenix GS
24 GB GDDR6X |
AMD Radeon RX 6800 XT
16 GB GDDR6 |
|||
Gainward GeForce RTX 3090 Phoenix GS
24 GB GDDR6X |
AMD Radeon RX 6800 XT
16 GB GDDR6 |
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Gainward GeForce RTX 3090 Phoenix GS
24 GB GDDR6X |
AMD Radeon RX 6800 XT
16 GB GDDR6 |
AMD Radeon RX 6800 XT
16 GB GDDR6 |
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Gainward GeForce RTX 3090 Phoenix GS
24 GB GDDR6X |