AMD Radeon RX 6750 XT vs NVIDIA Quadro RTX 8000 Comparison

Head-to-Head Benchmarks

The benchmark data presents a clear split between these two GPUs, with the NVIDIA Quadro RTX 8000 winning 5 of 9 tests and the AMD Radeon RX 6750 XT taking 4. The most dramatic gap appears in Geekbench OpenCL, where the Quadro scores 101,883 versus the Radeon's 16,360 — a massive 522.8% advantage. That is not a marginal lead; it is a generational chasm in compute-oriented workloads. The Quadro also dominates Geekbench Vulkan with 122,637 against 98,089, a 25% margin, and edges out the Radeon in Passmark GPU Compute by 4.6% (9,992 vs 9,550). In legacy DirectX 10 and 11 tests, the Quadro leads by 9.6% (137 vs 125) and 4.4% (188 vs 180), respectively.

The Radeon's wins are concentrated in rasterization and 2D performance. Its Passmark G3D score of 20,700 beats the Quadro's 19,799 by 4.4%. The DirectX 9 test shows a 19.8% Radeon advantage (263 vs 211), the largest win for AMD in this comparison. The Radeon also takes DirectX 12 by a razor-thin 1.2% (80 vs 79) and Passmark G2D by 10.9% (972 vs 866). Notably, the DirectX 12 result is essentially a tie — a single point separates them — while the G2D gap suggests the Radeon has better 2D acceleration. The overall pattern is that the Quadro crushes compute-heavy benchmarks while the Radeon holds a narrower but consistent lead in traditional graphics workloads.

When placed against their respective nearest rivals, both cards sit in similar performance tiers. The Quadro's average benchmark score of 28,421 puts it 0.6% behind the AMD Radeon R9 M295X and 1.1% ahead of the AMD FirePro S7150. The Radeon's average of 26,011 is 0.5% ahead of the AMD Radeon R9 M395X and 1.1% ahead of the NVIDIA GeForce RTX 3080 Ti Mobile. Neither card is an outlier in its peer group; both occupy the 71st to 74th percentile of all GPUs.

FAQ

Q: Which card is faster in compute workloads?

A: The NVIDIA Quadro RTX 8000 wins decisively. Its Geekbench OpenCL score of 101,883 is 522.8% higher than the Radeon's 16,360, and its Geekbench Vulkan score of 122,637 beats the Radeon's 98,089 by 25%. Passmark GPU Compute also favors the Quadro at 9,992 versus 9,550.

Q: Which card performs better in DirectX 12 games?

A: The AMD Radeon RX 6750 XT wins by a single point in Passmark DirectX 12 (80 vs 79), a 1.2% margin. This is effectively a tie, but the Radeon is the nominal winner. For broader gaming performance, the Radeon's Passmark G3D score of 20,700 exceeds the Quadro's 19,799 by 4.4%.

Q: What is the memory capacity difference?

A: The Quadro RTX 8000 has 48 GB of GDDR6 memory on a 384-bit bus with 672.0 GB/s bandwidth. The Radeon RX 6750 XT has 12 GB of GDDR6 on a 192-bit bus with 432.0 GB/s bandwidth. The Quadro's memory bandwidth is 55.6% higher.

Q: Which card has better legacy DirectX 9 performance?

A: The Radeon RX 6750 XT is significantly faster, scoring 263 in Passmark DirectX 9 versus the Quadro's 211. This represents a 19.8% advantage for AMD.

Q: How do their average benchmark scores compare?

A: The Quadro RTX 8000 has an average benchmark score of 28,421, which is 9.3% higher than the Radeon's 26,011. Both cards sit in the 71st-74th percentile of all GPUs.

Q: Do both cards support the same API levels?

A: Yes, both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. They are identical in API feature support, meaning software compatibility is not a differentiator.

Architecture Differences

The two GPUs come from fundamentally different architectural eras. The Quadro RTX 8000 uses NVIDIA's Turing architecture on the TU102 chip, built on a 12 nm process at TSMC. The chip contains 18,600 million transistors on a 754 mm² die, with a transistor density of 24.7M per mm². The Radeon RX 6750 XT uses AMD's RDNA 2.0 architecture on the Navi 22 chip, built on a 7 nm process, also at TSMC. It packs 17,200 million transistors on a much smaller 335 mm² die, achieving a transistor density of 51.3M per mm² — more than double the Quadro's density.

The Quadro's Turing architecture includes 72 RT cores and 576 tensor cores, which are absent from the Radeon's specification sheet. The Radeon has 40 RT cores but no tensor cores listed. This means the Quadro has dedicated hardware for ray tracing and AI acceleration, while the Radeon relies on its RT cores for ray tracing but lacks tensor core functionality. The shading unit counts reflect the architectural differences: the Quadro has 4,608 shading units, 288 TMUs, and 96 ROPs, while the Radeon has 2,560 shading units, 160 TMUs, and 64 ROPs.

Clock speeds tell a different story. The Radeon runs at a base clock of 2150 MHz and boosts to 2600 MHz, with a game clock of 2495 MHz. The Quadro's base is 1395 MHz with a boost of 1770 MHz. The Radeon's higher clocks partially compensate for its lower core counts. Memory clocks also differ: the Quadro runs memory at 1750 MHz (14 Gbps effective), while the Radeon runs at 2250 MHz (18 Gbps effective). The Radeon's process node advantage (7 nm vs 12 nm) is evident in its higher clock speeds and transistor density.

Specification Differences

The two cards differ across nearly every measurable specification. Memory capacity is the most obvious: 48 GB on the Quadro versus 12 GB on the Radeon. Bus width follows suit at 384-bit versus 192-bit, and bandwidth is 672.0 GB/s versus 432.0 GB/s. The Quadro has 4,608 shading units, 288 TMUs, and 96 ROPs; the Radeon has 2,560 shading units, 160 TMUs, and 64 ROPs. RT cores differ at 72 versus 40, and the Quadro's 576 tensor cores have no equivalent on the Radeon.

Pixel and texture rates favor the Quadro, with 169.9 GPixel/s and 509.8 GTexel/s versus the Radeon's 166.4 GPixel/s and 416.0 GTexel/s. FP32 performance is 16.31 TFLOPS on the Quadro versus 13.31 TFLOPS on the Radeon; FP16 is 32.62 TFLOPS versus 26.62 TFLOPS. Power draw is close: 260 W for the Quadro, 250 W for the Radeon, both with the same 600 W suggested PSU and identical 1x 6-pin + 1x 8-pin power connectors.

Physical dimensions are nearly identical: both are 267 mm long and dual-slot; the Quadro is 111 mm tall, the Radeon 110 mm tall, and the Radeon's 40 mm width is the only listed third dimension. Display outputs differ: the Quadro has 4x DisplayPort 1.4a plus 1x USB Type-C, while the Radeon has 1x HDMI 2.1 and 3x DisplayPort 1.4a. The bus interface is PCIe 3.0 x16 on the Quadro versus PCIe 4.0 x16 on the Radeon. Release dates are nearly four years apart: August 2018 for the Quadro, March 2022 for the Radeon.

The Verdict

The data tells a straightforward story. If your priority is compute performance, memory capacity, or bandwidth, the NVIDIA Quadro RTX 8000 is the clear choice. Its 522.8% Geekbench OpenCL lead and 25% Vulkan advantage are not close calls. The 48 GB memory configuration is in a different class entirely from the Radeon's 12 GB, and the 672.0 GB/s bandwidth supports that capacity. This is a workstation card aimed at professionals who need to move large datasets through GPU memory.

If your priority is rasterization performance in conventional graphics workloads, the AMD Radeon RX 6750 XT has the edge. Its Passmark G3D score of 20,700 beats the Quadro by 4.4%, and it wins DirectX 9 by 19.8% and DirectX 12 by 1.2%. The Radeon also has better 2D performance in Passmark G2D by 10.9%. For gaming or general graphics tasks, the Radeon is the better performer despite its lower compute scores.

Neither card is dominant overall. The Quadro wins 5 benchmarks; the Radeon wins 4. The Quadro's average score of 28,421 is higher than the Radeon's 26,011, but the Radeon sits at the 71st percentile versus the Quadro's 74th — a narrow gap. Choose based on workload: compute and memory capacity favor NVIDIA, rasterization and 2D favor AMD.

Where Each One Wins

NVIDIA Quadro RTX 8000 wins in: Geekbench OpenCL (522.8% lead), Geekbench Vulkan (25% lead), Passmark GPU Compute (4.6% lead), Passmark DirectX 10 (9.6% lead), and Passmark DirectX 11 (4.4% lead). This card is for compute-heavy workloads such as rendering, scientific simulation, or AI inference where the 48 GB memory and 672.0 GB/s bandwidth matter. The 576 tensor cores provide hardware acceleration for AI tasks that the Radeon cannot match. The 72 RT cores also give it ray tracing capability, though the Radeon's 40 RT cores handle that too.

AMD Radeon RX 6750 XT wins in: Passmark G3D (4.4% lead), Passmark DirectX 9 (19.8% lead), Passmark DirectX 12 (1.2% lead), and Passmark G2D (10.9% lead). This card is for traditional graphics workloads where rasterization speed matters more than compute throughput. Its higher clock speeds (2600 MHz boost versus 1770 MHz) and PCIe 4.0 interface give it an edge in games and 2D applications. The 12 GB memory is adequate for most gaming scenarios, and the card's efficiency — 13.31 TFLOPS on 250 W — is competitive.

The practical advice is simple. For a workstation doing compute or AI work, the Quadro's 48 GB memory and compute dominance justify its existence. For a gaming rig or general-purpose graphics card, the Radeon's rasterization wins and lower power draw make it the better fit. The 4.4% G3D gap is meaningful in games, while the 522.8% OpenCL gap is decisive in compute. There is no single "better" card — only the right tool for the job.