AMD Radeon RX 6600 vs NVIDIA TITAN Xp Comparison

The NVIDIA TITAN Xp and AMD Radeon RX 6600 are separated by over four years of GPU architecture evolution, yet their average benchmark scores are nearly identical. The TITAN Xp, a 2017 flagship built on Pascal, averages 19,177 points across all tests, while the 2021 Radeon RX 6600 averages 19,036 points—a razor-thin 0.7% margin. This head-to-head pits a 3840-shader behemoth with 12 GB of GDDR5X against a 1792-shader RDNA 2 part with 8 GB of GDDR6, and the data reveals a fascinating split: the TITAN Xp dominates raw compute and DirectX 12 workloads, but the RX 6600 counters in 2D performance and brings modern API support.

FAQ

Q: Which GPU has the higher average benchmark score?

A: The NVIDIA TITAN Xp scores 19,177 on average, versus 19,036 for the AMD Radeon RX 6600. That is a 0.7% difference, placing the TITAN Xp 0.7% ahead of the RX 6600 in the nearestRivals comparison.

Q: How do they compare in 3DMark Steel Nomad DX12?

A: The TITAN Xp wins decisively with a score of 2,372 versus 1,492 for the RX 6600, a 59% advantage. This is the largest single-test margin in the entire head-to-head set.

Q: Is there any benchmark where the RX 6600 wins?

A: Yes, in Passmark G2D the RX 6600 scores 889 against the TITAN Xp’s 883, a 0.7% edge. It is the only one of ten head-to-head tests the AMD card wins.

Q: What are the memory specifications of each card?

A: The TITAN Xp has 12 GB of GDDR5X on a 384-bit bus with 547.6 GB/s bandwidth. The RX 6600 has 8 GB of GDDR6 on a 128-bit bus with 224.0 GB/s bandwidth.

Q: How do their compute capabilities differ?

A: The TITAN Xp delivers 12.15 TFLOPS of FP32 performance, while the RX 6600 delivers 8.928 TFLOPS. In Passmark GPU Compute, the TITAN Xp leads 9,430 to 6,554, a 43.9% advantage.

Q: Which card supports newer DirectX features?

A: The RX 6600 supports DirectX 12 Ultimate (12_2), while the TITAN Xp is limited to DirectX 12 (12_1). The RX 6600 also includes 28 ray tracing cores, which the TITAN Xp lacks entirely.

Architecture Differences

The two GPUs represent fundamentally different design philosophies separated by a process node shrink. The TITAN Xp uses the GP102 chip on TSMC’s 16 nm process, packing 11,800 million transistors into a 471 mm² die. The RX 6600 uses Navi 23 on TSMC’s 7 nm node, fitting 11,060 million transistors into just 237 mm². This translates to a transistor density of 25.1 million per mm² for the TITAN Xp versus 46.7 million per mm² for the RX 6600—the AMD part is nearly twice as dense.

The execution resources differ wildly. The TITAN Xp fields 3,840 shading units, 240 texture mapping units, and 96 ROPs. The RX 6600 has 1,792 shading units, 112 TMUs, and 64 ROPs—roughly half in every category. Yet the RX 6600 compensates with higher clocks: a 1,626 MHz base and 2,491 MHz boost, versus 1,405 MHz base and 1,582 MHz boost for the TITAN Xp. The RX 6600 also has a game clock of 2,044 MHz, a feature the TITAN Xp lacks.

Memory architecture shows a similar divergence. The TITAN Xp uses 12 GB of GDDR5X at 11.4 Gbps effective on a 384-bit bus, yielding 547.6 GB/s of bandwidth. The RX 6600 uses 8 GB of GDDR6 at 14 Gbps effective on a 128-bit bus, producing 224.0 GB/s. The TITAN Xp’s bandwidth advantage is 2.4x, but the RX 6600’s FP16 performance is dramatically better: 17.86 TFLOPS versus 189.8 GFLOPS, a 94x difference that reflects RDNA 2’s 2:1 FP16 ratio versus Pascal’s 1:64.

Feature support diverges on ray tracing and PCIe. The RX 6600 includes 28 ray tracing cores and supports PCIe 4.0 x8, while the TITAN Xp has no RT cores and uses PCIe 3.0 x16. Both support DirectX 12, but the RX 6600 reaches 12 Ultimate (12_2) against the TITAN Xp’s 12 (12_1). Both offer OpenGL 4.6 and Vulkan 1.4. The RX 6600’s TDP is 132 W versus 250 W for the TITAN Xp, and it requires a 300 W PSU versus 600 W.

The Verdict

The data tells a clear story for different use cases. The NVIDIA TITAN Xp is the choice for raw compute and DirectX 12-heavy workloads. It wins 9 of 10 head-to-head benchmarks, including a 59% blowout in 3DMark Steel Nomad DX12, a 151.6% margin in Geekbench OpenCL, and a 43.9% edge in Passmark GPU Compute. Its 12.15 TFLOPS FP32 and 547.6 GB/s bandwidth make it a compute monster that still holds its own in modern gaming benchmarks.

The AMD Radeon RX 6600 is the choice for efficiency and modern feature support. It matches the TITAN Xp in Passmark DirectX 11 (152 vs 152) and edges ahead in Passmark G2D (889 vs 883). Its 7 nm process, 132 W TDP, and 28 ray tracing cores make it a far more power-conscious option. The RX 6600 also supports DirectX 12 Ultimate, which the TITAN Xp cannot claim.

For a gamer prioritizing ray tracing and lower power draw, the RX 6600 is the rational pick. For a compute-focused user who needs maximum FP32 throughput and memory bandwidth, the TITAN Xp remains compelling despite its age. The 0.7% average score difference means neither card is objectively faster overall—the right choice depends entirely on which workloads matter most. The TITAN Xp’s 64th percentile versus the RX 6600’s 63rd percentile across all GPUs confirms they occupy nearly identical performance tiers.

Specification Differences

• Process Node: TITAN Xp uses 16 nm; RX 6600 uses 7 nm.
• Transistors: TITAN Xp has 11,800 million; RX 6600 has 11,060 million.
• Die Size: TITAN Xp is 471 mm²; RX 6600 is 237 mm².
• Base Clock: TITAN Xp runs 1,405 MHz; RX 6600 runs 1,626 MHz.
• Boost Clock: TITAN Xp boosts to 1,582 MHz; RX 6600 boosts to 2,491 MHz.
• Memory Size: TITAN Xp has 12 GB; RX 6600 has 8 GB.
• Memory Type: TITAN Xp uses GDDR5X; RX 6600 uses GDDR6.
• Memory Bus: TITAN Xp has 384-bit; RX 6600 has 128-bit.
• Memory Bandwidth: TITAN Xp delivers 547.6 GB/s; RX 6600 delivers 224.0 GB/s.
• Shading Units: TITAN Xp has 3,840; RX 6600 has 1,792.
• TMUs: TITAN Xp has 240; RX 6600 has 112.
• ROPs: TITAN Xp has 96; RX 6600 has 64.
• Ray Tracing Cores: TITAN Xp has none; RX 6600 has 28.
• Pixel Rate: TITAN Xp is 151.9 GPixel/s; RX 6600 is 159.4 GPixel/s.
• Texture Rate: TITAN Xp is 379.7 GTexel/s; RX 6600 is 279.0 GTexel/s.
• FP32: TITAN Xp is 12.15 TFLOPS; RX 6600 is 8.928 TFLOPS.
• FP16: TITAN Xp is 189.8 GFLOPS; RX 6600 is 17.86 TFLOPS.
• TDP: TITAN Xp is 250 W; RX 6600 is 132 W.
• Power Connectors: TITAN Xp uses 1x 6-pin + 1x 8-pin; RX 6600 uses 1x 8-pin.
• Suggested PSU: TITAN Xp requires 600 W; RX 6600 requires 300 W.
• Bus Interface: TITAN Xp is PCIe 3.0 x16; RX 6600 is PCIe 4.0 x8.
• DirectX Support: TITAN Xp is 12 (12_1); RX 6600 is 12 Ultimate (12_2).
• Dimensions: TITAN Xp is 267 mm long; RX 6600 is 190 mm long.

Head-to-Head Benchmarks

The TITAN Xp’s largest victory comes in Geekbench OpenCL, where it scores 72,585 against the RX 6600’s 28,850—a 151.6% advantage. This is the single biggest delta in the dataset and reflects the TITAN Xp’s massive shading unit count and memory bandwidth. The 3DMark Steel Nomad DX12 test shows a 59% win (2,372 vs 1,492), confirming the TITAN Xp’s DirectX 12 prowess despite lacking the newer 12_2 feature set.

In Passmark GPU Compute, the TITAN Xp leads 9,430 to 6,554, a 43.9% margin. This aligns with its 12.15 TFLOPS FP32 versus the RX 6600’s 8.928 TFLOPS. The DirectX 12 Passmark test shows a 35.3% gap (69 vs 51), while DirectX 10 shows 25.3% (119 vs 95). Passmark G3D, a broad gaming proxy, gives the TITAN Xp a 24.2% win (18,750 vs 15,096). Geekbench Vulkan shows a 28.9% edge (87,180 vs 67,623), and DirectX 9 shows 14.7% (226 vs 197).

The RX 6600’s solitary win is in Passmark G2D, scoring 889 versus 883—a slim 0.7% margin. The two cards tie exactly in Passmark DirectX 11 at 152 apiece. This near-parity in legacy API tests suggests that the RX 6600’s higher clocks and newer architecture offset the TITAN Xp’s raw resource advantage in less demanding scenarios. The RX 6600 also posts a Geekbench Metal score of 88,398, a test the TITAN Xp did not run, though this cannot be compared directly. Overall, the TITAN Xp wins 9 out of 10 comparable tests, but the RX 6600’s efficiency and modern feature set keep the average scores within 0.7% of each other.