AMD Radeon RX 6600 vs NVIDIA RTX PRO 6000 Blackwell Comparison

Head-to-Head Benchmarks

The database contains one directly comparable benchmark between these two cards, and the result is decisive. In the 3DMark Steel Nomad DX12 test, the NVIDIA RTX PRO 6000 Blackwell scores 16408 points, while the AMD Radeon RX 6600 manages 1492 points. The delta is -90.9 percent from the perspective of the AMD card, meaning the NVIDIA card outperforms it by roughly 11 times. That single figure tells most of the story: this is not a close contest, it is a generational and market-segment gap expressed in raw numbers.

Looking at the average benchmark scores across all recorded tests, the AMD Radeon RX 6600 posts an average of 19036, which places it in the 63rd percentile of all GPUs in the database. Its nearest rivals include the NVIDIA Quadro K6000 at 19030 (a 0 percent delta), the NVIDIA GeForce RTX 4050 Mobile at 19049 (-0.1 percent), the NVIDIA Tesla K20m at 19089 (-0.3 percent), and the NVIDIA RTX 2000 Ada Generation at 18954 (0.4 percent). The RX 6600 sits comfortably in that mid-pack cluster, trading blows with older workstation flagships and modern entry-level mobile parts.

The NVIDIA RTX PRO 6000 Blackwell, by contrast, has an average benchmark score of 16408 and sits in the 59th percentile. Its nearest rivals are the AMD Radeon PRO W7500 at 16415 (0 percent delta), the AMD Radeon RX 5700 XT at 16361 (0.3 percent), the AMD Radeon Pro 5600M at 16351 (0.4 percent), and the NVIDIA GeForce RTX 5090 D V2 at 16504 (-0.6 percent). Note the odd situation: the RTX PRO 6000 has a lower average score than the RX 6600, yet it crushes the RX 6600 in the one shared test. That happens because the RTX PRO 6000 has only a single benchmark entry in the database, so its average is pulled entirely from that one demanding DX12 workload, while the RX 6600 has eleven entries across older and lighter tests.

Interpreting the numbers requires care. The RX 6600 scores well in legacy benchmarks like Passmark DirectX 9 (197), DirectX 10 (95), and DirectX 11 (152), plus Geekbench Metal (88398), Vulkan (67623), and OpenCL (28850). Those are not workloads that stress modern ray tracing or massive memory bandwidth. The RTX PRO 6000 only appears in the Steel Nomad test, which is a modern DX12 scene designed to push current hardware. So the head-to-head delta of -90.9 percent reflects the most relevant comparison for contemporary workloads, and it is lopsided in favor of the Blackwell card.

FAQ

Q: Which card wins the only directly comparable benchmark?

A: The NVIDIA RTX PRO 6000 Blackwell wins the 3DMark Steel Nomad DX12 test with 16408 points against the AMD Radeon RX 6600's 1492 points, a delta of -90.9 percent for the AMD card.

Q: How do their average benchmark scores compare?

A: The AMD Radeon RX 6600 has an average benchmark score of 19036 across eleven tests, while the NVIDIA RTX PRO 6000 Blackwell has an average of 16408 from a single test. The RX 6600 sits in the 63rd percentile, the RTX PRO 6000 in the 59th.

Q: What are the nearest rivals for the RX 6600?

A: The closest competitors are the NVIDIA Quadro K6000 (19030, 0 percent delta), the NVIDIA GeForce RTX 4050 Mobile (19049, -0.1 percent), the NVIDIA Tesla K20m (19089, -0.3 percent), and the NVIDIA RTX 2000 Ada Generation (18954, 0.4 percent).

Q: What are the nearest rivals for the RTX PRO 6000 Blackwell?

A: The nearest rivals are the AMD Radeon PRO W7500 (16415, 0 percent delta), the AMD Radeon RX 5700 XT (16361, 0.3 percent), the AMD Radeon Pro 5600M (16351, 0.4 percent), and the NVIDIA GeForce RTX 5090 D V2 (16504, -0.6 percent).

Q: Why does the RTX PRO 6000 have a lower percentile despite winning the head-to-head?

A: The RTX PRO 6000 has only one recorded benchmark entry, the demanding Steel Nomad DX12 test, which keeps its average low relative to the RX 6600's eleven tests spanning older and lighter workloads. The database percentile reflects the full set of recorded tests, not just the shared one.

Q: What is the production status of each card?

A: The AMD Radeon RX 6600 is marked end-of-life, while the NVIDIA RTX PRO 6000 Blackwell is listed as active production.

Architecture Differences

The architectural gap between these two cards is enormous. The AMD Radeon RX 6600 uses the Navi 23 chip built on RDNA 2.0 architecture, fabricated on a 7 nm process at TSMC. It packs 11,060 million transistors on a 237 mm² die, giving a transistor density of 46.7 million per square millimeter. The chip houses 1792 shading units, 112 texture mapping units, 64 render output units, and 28 ray tracing cores. It has no dedicated tensor cores. The memory subsystem uses 8 GB of GDDR6 on a 128-bit bus, delivering 224.0 GB/s of bandwidth. The pixel rate is 159.4 GPixel/s, the texture rate is 279.0 GTexel/s, and FP32 compute is rated at 8.928 TFLOPS. FP16 is 17.86 TFLOPS with a 2:1 ratio.

The NVIDIA RTX PRO 6000 Blackwell is a different class entirely. It uses the GB202 chip on Blackwell 2.0 architecture, fabricated on a 5 nm process at TSMC. Transistor count is 92,200 million on a 750 mm² die, with a density of 122.9 million per square millimeter. That is more than 8 times the transistor count and nearly 3 times the die area. The GPU has 24,064 shading units, 752 TMUs, 192 ROPs, 188 ray tracing cores, and 752 tensor cores. The memory subsystem is 96 GB of GDDR7 on a 512-bit bus, yielding 1.79 TB/s of bandwidth, roughly 8 times the RX 6600's bandwidth. Pixel rate is 502.5 GPixel/s, texture rate is 1,968.0 GTexel/s, and FP32 compute is 126.0 TFLOPS. FP16 is also 126.0 TFLOPS, at a 1:1 ratio, meaning there is no half-rate penalty.

The tensor cores on the NVIDIA card are the key architectural differentiator for AI and compute workloads, while the RX 6600 lacks them entirely. The ray tracing core count also differs by a factor of nearly 7 (28 vs 188). The memory type and bus width differences are stark: GDDR6 on a 128-bit bus versus GDDR7 on a 512-bit bus. The RX 6600's RDNA 2.0 architecture is two generations old relative to Blackwell 2.0, and the node shrink from 7 nm to 5 nm plus the massive die size increase explains the performance gap in the Steel Nomad test.

Specification Differences

The two cards differ on nearly every specification field. Clock speeds: the RX 6600 has a base clock of 1626 MHz and a boost of 2491 MHz, with a game clock of 2044 MHz. The RTX PRO 6000 Blackwell has a base of 1590 MHz and a boost of 2617 MHz, with no game clock listed. The NVIDIA card boosts higher despite having vastly more compute units.

Memory: 8 GB GDDR6 at 14 Gbps effective on a 128-bit bus versus 96 GB GDDR7 at 28 Gbps effective on a 512-bit bus. Bandwidth is 224.0 GB/s versus 1.79 TB/s. Power: the RX 6600 has a TDP of 132 W and requires a single 8-pin connector with a suggested 300 W PSU. The RTX PRO 6000 has a TDP of 600 W, uses a single 16-pin connector, and suggests a 1000 W PSU.

Physical dimensions: the RX 6600 is 190 mm long, 110 mm tall, and 40 mm wide. The RTX PRO 6000 is 304 mm long, 137 mm tall, and 40 mm wide. Both are dual-slot cards. Bus interface: PCIe 4.0 x8 versus PCIe 5.0 x16. Display outputs: the RX 6600 has 1x HDMI 2.1 and 3x DisplayPort 1.4a, while the RTX PRO 6000 has 4x DisplayPort 2.1b. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Release dates: the RX 6600 launched on 2021-10-12, while the RTX PRO 6000 launched on 2025-03-17. The RX 6600 is end-of-life, the RTX PRO 6000 is active. The RX 6600 has a predecessor in Navi and a successor in Navi III, while the RTX PRO 6000 lists its predecessor as Workstation Ada and has no successor. The RX 6600's launch MSRP was 329 USD, the RTX PRO 6000's launch MSRP was 8,565 USD.

The Verdict

The data points to a single clear conclusion: the NVIDIA RTX PRO 6000 Blackwell is overwhelmingly faster in the one modern workload both cards share, and it offers a vastly larger memory pool, higher bandwidth, more compute units, and tensor cores. The RX 6600 wins only in the sense of having a broader set of legacy benchmark entries and a far lower power draw. For any builder choosing between these two, the decision hinges on workload and budget context, but from raw performance in the recorded Steel Nomad test, there is no contest.

The RX 6600 is an end-of-life part aimed at 1080p gaming and light productivity, with an average benchmark score of 19036 and a 63rd percentile standing. Its nearest rivals are older workstation cards and mobile parts, which frames it as a mid-range solution. The RTX PRO 6000 is an active workstation flagship with a 59th percentile, but that percentile is based on a single demanding test; its nearest rivals include the RTX 5090 D V2, which is a top-tier consumer card. The RTX PRO 6000's average score of 16408 in Steel Nomad is 11 times the RX 6600's 1492, and the delta of -90.9 percent is the largest in the database comparison.

For a builder on a strict power budget or a legacy workload that favors the RX 6600's older DirectX tests, the AMD card has a niche. But for modern DX12 rendering, AI compute, or large memory datasets, the RTX PRO 6000 is the only rational choice from this data.

Where Each One Wins

The AMD Radeon RX 6600 wins on legacy benchmark coverage. Its recorded scores include Passmark DirectX 9 (197), DirectX 10 (95), DirectX 11 (152), DirectX 12 (51), G2D (889), G3D (15096), and GPU compute (6554). It also posts strong Geekbench numbers: Metal at 88398, Vulkan at 67623, and OpenCL at 28850. These results indicate it handles older API workloads and general compute tasks with relative competence. Its lower TDP of 132 W and single 8-pin connector make it suitable for smaller power supplies and compact builds, and its 190 mm length fits in smaller cases. The RX 6600 also sits in the 63rd percentile, above the RTX PRO 6000's 59th, though that is an artifact of the different test sets.

The NVIDIA RTX PRO 6000 Blackwell wins on every metric that matters for modern high-end workloads. In the shared Steel Nomad DX12 test, it scores 16408 versus 1492, a 90.9 percent advantage. Its 96 GB of GDDR7 memory on a 512-bit bus with 1.79 TB/s bandwidth is unmatched by the RX 6600's 8 GB GDDR6 at 224.0 GB/s. The 752 tensor cores and 188 ray tracing cores enable AI acceleration and hardware ray tracing at a scale the RX 6600 cannot approach. The 126.0 TFLOPS FP32 and FP16 (1:1) compute is roughly 14 times the RX 6600's 8.928 TFLOPS FP32. The PCIe 5.0 x16 interface doubles the bandwidth of the RX 6600's PCIe 4.0 x8. The 4x DisplayPort 2.1b outputs support modern high-resolution monitors, and the 600 W TDP with a 1000 W suggested PSU reflects its workstation-class power appetite.

Use-case split: choose the RX 6600 for legacy DirectX 9-11 workloads, compact builds, or power-constrained systems. Choose the RTX PRO 6000 for modern DX12 rendering, AI inference, ray tracing, large memory datasets, or any workload where the 11x Steel Nomad advantage is relevant. The recorded data leaves no ambiguity about which card is faster; it only leaves a question about whether the workload justifies the power and size difference.