AMD Radeon Pro 580X vs AMD Radeon RX 6800 XT Comparison

Head-to-Head Benchmarks

The benchmark data shows a decisive, one-sided contest between the AMD Radeon RX 6800 XT and the AMD Radeon Pro 580X. Across the three shared tests in the database, the RX 6800 XT wins every single round, and the margins are substantial. The largest gap appears in Geekbench OpenCL, where the RX 6800 XT scores 171,304 against the Pro 580X’s 36,426, a delta of 370.3%. That is more than quadruple the older card’s compute output in a raw, API-agnostic workload.

Geekbench Metal tells a similar story, with the RX 6800 XT posting 181,337 points versus 39,577 for the Pro 580X, a 358.2% advantage. This is notable because Metal is Apple’s native graphics API, and the Pro 580X is explicitly a Radeon Pro Mac part. Even in its home turf, the RX 6800 XT is roughly 4.6 times faster. The smallest relative win for the RX 6800 XT comes in Geekbench Vulkan, where it scores 136,875 against 40,115, a 241.2% lead. Still, that is a 3.4x gap, and it underscores that the RX 6800 XT’s advantage is not limited to a single API or workload type.

Looking at the broader database averages, the RX 6800 XT sits at 48,477 average benchmark score, while the Pro 580X averages 38,706. The RX 6800 XT also ranks in the 85th percentile of all GPUs, versus the 82nd percentile for the Pro 580X. The delta between the two cards in raw average score is about 25%, which is far smaller than the head-to-head deltas, because the average includes tests that each card runs separately. The direct comparisons, however, are unambiguous: the RX 6800 XT dominates in every recorded shared test.

Architecture Differences

The two GPUs come from different architectural generations and manufacturing processes. The RX 6800 XT is built on RDNA 2.0, using the Navi 21 chip, fabricated on a 7 nm TSMC process. The Pro 580X uses GCN 4.0, with the Ellesmere chip, built on a 14 nm GlobalFoundries process. That process gap alone explains much of the efficiency and clock speed difference. The RX 6800 XT has a base clock of 1825 MHz and a boost clock of 2250 MHz, with a game clock of 2015 MHz. The Pro 580X runs at a base of 1100 MHz and a boost of 1200 MHz. Higher clocks, combined with a much newer architecture, give the RX 6800 XT a massive throughput advantage.

Transistor counts also differ enormously. The Navi 21 die packs 26,800 million transistors on a 520 mm² die, for a density of 51.5 million transistors per square millimeter. Ellesmere, by contrast, has 5,700 million transistors on a 232 mm² die, with a density of 24.6 million per square millimeter. The RX 6800 XT has 4608 shading units, 288 texture mapping units, and 128 ROPs, versus 2304 shading units, 144 TMUs, and 32 ROPs on the Pro 580X. That is exactly double the shaders and TMUs, and quadruple the ROP count.

Memory is another major differentiator. The RX 6800 XT ships with 16 GB of GDDR6 on a 256-bit bus, delivering 512.0 GB/s of bandwidth. The Pro 580X has 8 GB of GDDR5 on a 256-bit bus, with 218.9 GB/s. The RX 6800 XT also supports hardware ray tracing, with 72 dedicated RT cores, while the Pro 580X has none. The RX 6800 XT supports DirectX 12 Ultimate (12_2), while the Pro 580X is limited to DirectX 12 (12_0). Vulkan support is present on both, but the RX 6800 XT reports Vulkan 1.4 versus 1.3 on the Pro 580X. OpenGL is identical at 4.6.

The Pro 580X is a different class of product in terms of physical design. It is an IGP (integrated graphics processor) with an Apple MPX bus interface, designed for Mac Pro systems, and it draws 185 W. The RX 6800 XT is a dual-slot, 300 W card with a PCIe 4.0 x16 interface and requires a 700 W power supply. It uses two 8-pin power connectors and measures 267 mm in length, 120 mm in height, and 50 mm in width. The Pro 580X has no listed dimensions or power connectors, consistent with its integrated, Mac-specific role.

Where Each One Wins

The RX 6800 XT wins in every scenario where these two cards overlap. In gaming, its RDNA 2.0 architecture, 16 GB of GDDR6, and ray tracing hardware make it the obvious choice for DirectX 12 Ultimate titles, where it can enable hardware-accelerated ray tracing and other modern features. The Pro 580X, with GCN 4.0 and no RT cores, cannot match that feature set. In compute workloads such as OpenCL, the RX 6800 XT’s 20.74 TFLOPS of FP32 performance dwarfs the Pro 580X’s 5.530 TFLOPS, a near 4x gap that shows up directly in the Geekbench OpenCL result.

The Pro 580X does have one niche: it is designed for Apple MPX systems. Its 2x HDMI 2.0b outputs and IGP form factor make it a drop-in component for Mac Pro workstations, where the RX 6800 XT with its 1x HDMI 2.1, 2x DisplayPort 1.4a, and 1x USB Type-C outputs is not a direct fit. In Geekbench Metal, which is Apple’s API, the Pro 580X still loses badly, but it remains a functional option for Mac users who need a supported GPU. For anyone building or upgrading a standard PC, the RX 6800 XT is the only sensible pick between the two.

The percentile rankings reinforce this split. The RX 6800 XT sits at the 85th percentile of all GPUs, while the Pro 580X sits at the 82nd, a surprisingly close overall standing given the head-to-head blowout. This is because the Pro 580X’s average score is pulled up by its narrow set of tests, and the RX 6800 XT is compared against far more powerful modern cards. Still, in direct competition, the RX 6800 XT’s nearest rivals include the NVIDIA GeForce RTX 5070 Ti (delta of -3%) and the AMD Radeon RX Vega 64 (delta of -3%), while the Pro 580X trades blows with the NVIDIA GeForce MX570 A (delta of 0%) and the NVIDIA GeForce RTX 5080 Mobile (delta of 0.9%). That context shows the Pro 580X competing in a much lower performance tier.

The Verdict

The data supports a straightforward conclusion: the AMD Radeon RX 6800 XT is the superior GPU by every measurable metric. It wins all three shared benchmarks by margins of 241% to 370%, has a higher average benchmark score (48,477 versus 38,706), and offers more than double the shading units, TMUs, and memory bandwidth. It also brings modern features like ray tracing and DirectX 12 Ultimate that the Pro 580X simply does not have.

The only scenario where the Pro 580X makes sense is a Mac Pro system that requires an Apple MPX card with 2x HDMI 2.0b outputs. If that is the hardware constraint, the Pro 580X is a valid, if dated, choice. But for any general-purpose PC workload, gaming, or compute task, the RX 6800 XT is the clear winner. Its launch MSRP was 649 USD, and it delivers far more performance per watt than the older GCN part, with 300 W TDP versus 185 W. The RX 6800 XT is end-of-life, as is the Pro 580X, but the former remains a high-end performer while the latter is a legacy workstation part.

FAQ

Q: Which GPU wins in Geekbench Metal?

A: The AMD Radeon RX 6800 XT wins with a score of 181,337 versus 39,577 for the AMD Radeon Pro 580X, a 358.2% advantage.

Q: What is the memory configuration of each card?

A: The RX 6800 XT has 16 GB of GDDR6 on a 256-bit bus with 512.0 GB/s bandwidth. The Pro 580X has 8 GB of GDDR5 on a 256-bit bus with 218.9 GB/s bandwidth.

Q: Does the Pro 580X support ray tracing?

A: No, the Pro 580X has no RT cores. The RX 6800 XT has 72 ray tracing cores.

Q: What are the process nodes for these GPUs?

A: The RX 6800 XT is built on a 7 nm TSMC process, while the Pro 580X uses a 14 nm GlobalFoundries process.

Q: How do their average benchmark scores compare?

A: The RX 6800 XT averages 48,477 points, while the Pro 580X averages 38,706 points. The RX 6800 XT is in the 85th percentile of all GPUs, and the Pro 580X is in the 82nd.

Q: Which card is better for DirectX 12 Ultimate games?

A: The RX 6800 XT, as it supports DirectX 12 Ultimate (12_2), while the Pro 580X is limited to DirectX 12 (12_0).