AMD Radeon Pro Vega 16 vs AMD Radeon RX 6600 XT Comparison

The AMD Radeon RX 6600 XT and the AMD Radeon Pro Vega 16 are both end-of-life AMD parts, but they occupy entirely different corners of the GPU landscape. The RX 6600 XT, built on RDNA 2.0, is a modern discrete desktop card that dominates the Pro Vega 16 in every benchmark category where they overlap. The Pro Vega 16, a GCN 5.0 mobile-class part, offers a much higher memory bandwidth per its class and a lower power draw, but its compute and graphics throughput are severely outclassed. The data shows a clear performance hierarchy, with the RX 6600 XT winning all three head-to-head matchups by massive margins.

The Verdict

The benchmark results leave no ambiguity: the AMD Radeon RX 6600 XT is the overwhelmingly faster GPU. In the three shared tests, it wins every single one, with margins ranging from 199.2% to 340.7%. Its average benchmark score of 24442 places it in the 70th percentile of all GPUs, while the Pro Vega 16’s average of 23250 lands in the 68th percentile. The RX 6600 XT’s nearest rivals include the NVIDIA GeForce RTX 2080 SUPER, which it edges by 1.1%, and the Intel Arc A350M, which is 0.8% behind it. The Pro Vega 16, conversely, trades blows with the NVIDIA P106-100 (a 0% delta) and the AMD Radeon RX 6600M (0.1% behind).

For a user selecting between these two, the choice depends entirely on workload. The RX 6600 XT is the pick for anyone needing raw compute, modern API support, or high-resolution gaming, as its FP32 throughput of 10.60 TFLOPS is more than four times the Pro Vega 16’s 2.437 TFLOPS. The Pro Vega 16, with its 4 GB HBM2 memory on a 1024-bit bus, is a niche part for systems where the 75 W TDP and integrated form factor are non-negotiable constraints. It is not a competitor to the RX 6600 XT in performance; it is a low-power, portable-device-oriented part that happens to share the same manufacturer. The data strongly suggests the RX 6600 XT for any performance-sensitive task, while the Pro Vega 16 is only relevant for specific low-power mobile deployments.

Architecture Differences

The architectural gap between these two GPUs is generational. The RX 6600 XT uses the Navi 23 chip built on RDNA 2.0, fabricated on a 7 nm process at TSMC. It packs 11,060 million transistors into a 237 mm² die, yielding a transistor density of 46.7M per mm². In contrast, the Pro Vega 16 uses the Vega 12 chip on GCN 5.0, built on a 14 nm process at GlobalFoundries, with no transistor count or die size listed in the data. This process node difference alone explains much of the performance disparity, as the newer 7 nm node allows for higher clocks and efficiency.

Clock speeds tell a similar story. The RX 6600 XT has a base clock of 1968 MHz, a game clock of 2359 MHz, and a boost clock of 2589 MHz. The Pro Vega 16’s base clock is 815 MHz with a boost of 1190 MHz. That is a difference of over 1,100 MHz at base and over 1,300 MHz at boost. The RX 6600 XT also features 32 dedicated ray tracing cores, a capability entirely absent from the Pro Vega 16, which lists no RT cores. The RX 6600 XT supports DirectX 12 Ultimate (12_2), while the Pro Vega 16 is limited to DirectX 12 (12_1). Both support OpenGL 4.6 and Vulkan, but the RX 6600 XT has Vulkan 1.4 versus the Pro Vega 16’s 1.3.

Memory architecture is another stark delimiter. The RX 6600 XT uses 8 GB of GDDR6 on a 128-bit bus, delivering 256.0 GB/s of bandwidth. The Pro Vega 16 uses 4 GB of HBM2 on a 1024-bit bus, delivering a higher 307.2 GB/s. This is a rare case where the older, slower-clocked card has more bandwidth, but it comes with half the capacity and a vastly narrower compute pipeline. The Pro Vega 16 also has half the shading units (1024 vs 2048), half the texture mapping units (64 vs 128), and half the ROPs (32 vs 64). The RX 6600 XT’s pixel rate of 165.7 GPixel/s and texture rate of 331.4 GTexel/s dwarf the Pro Vega 16’s 38.08 GPixel/s and 76.16 GTexel/s.

FAQ

Q: Which GPU has the higher average benchmark score?

A: The AMD Radeon RX 6600 XT has an average benchmark score of 24442, compared to the AMD Radeon Pro Vega 16’s average of 23250, a difference of roughly 1,192 points.

Q: How much faster is the RX 6600 XT in the Geekbench OpenCL test?

A: The RX 6600 XT scores 80503 in Geekbench OpenCL, which is 340.7% higher than the Pro Vega 16’s score of 18268, making it the largest win for the RX 6600 XT among the shared benchmarks.

Q: What is the memory bandwidth of each card?

A: The RX 6600 XT has a memory bandwidth of 256.0 GB/s, while the Pro Vega 16 has a higher bandwidth of 307.2 GB/s, despite the former having a 128-bit bus and the latter a 1024-bit bus.

Q: Does the Pro Vega 16 support ray tracing?

A: No, the Pro Vega 16 lists no ray tracing cores, whereas the RX 6600 XT includes 32 RT cores.

Q: What are the TDPs of the two cards?

A: The RX 6600 XT has a TDP of 160 W, while the Pro Vega 16 has a significantly lower TDP of 75 W, reflecting its integrated (IGP) form factor.

Q: Which card has a higher percentile ranking among all GPUs?

A: The RX 6600 XT ranks in the 70th percentile, while the Pro Vega 16 ranks in the 68th percentile, a narrow gap in percentile terms despite the large score differences.

Specification Differences

The two cards differ in nearly every measurable specification. The RX 6600 XT is built on a 7 nm process by TSMC, while the Pro Vega 16 uses a 14 nm process by GlobalFoundries. The RX 6600 XT has 11,060 million transistors on a 237 mm² die, whereas the Pro Vega 16 has no listed transistor count or die size. Clock speeds diverge sharply: the RX 6600 XT’s base clock is 1968 MHz and boost is 2589 MHz, compared to the Pro Vega 16’s 815 MHz base and 1190 MHz boost. The RX 6600 XT also has a game clock of 2359 MHz, a feature the Pro Vega 16 lacks.

Memory configurations are fundamentally different. The RX 6600 XT has 8 GB of GDDR6 on a 128-bit bus with 256.0 GB/s bandwidth, while the Pro Vega 16 has 4 GB of HBM2 on a 1024-bit bus with 307.2 GB/s bandwidth. The RX 6600 XT’s memory runs at 2000 MHz (16 Gbps effective), while the Pro Vega 16’s runs at 1200 MHz (2.4 Gbps effective). The RX 6600 XT has 2048 shading units, 128 TMUs, and 64 ROPs, versus 1024 shading units, 64 TMUs, and 32 ROPs on the Pro Vega 16. The RX 6600 XT includes 32 RT cores; the Pro Vega 16 has none.

Power and form factor also diverge. The RX 6600 XT has a TDP of 160 W, is a dual-slot card requiring a 1x 8-pin power connector and a 450 W suggested PSU, and measures 190 mm in length. The Pro Vega 16 has a TDP of 75 W, is an IGP (integrated graphics processor) with no power connectors or suggested PSU listed, and has no physical dimensions. The RX 6600 XT uses a PCIe 4.0 x8 interface and outputs 1x HDMI 2.1 and 3x DisplayPort 1.4a, while the Pro Vega 16 uses PCIe 3.0 x16 with display outputs listed as "Portable Device Dependent." API support differs as well: the RX 6600 XT supports DirectX 12 Ultimate (12_2) and Vulkan 1.4, while the Pro Vega 16 supports DirectX 12 (12_1) and Vulkan 1.3.

Head-to-Head Benchmarks

The RX 6600 XT sweeps all three head-to-head benchmark comparisons, and the margins are lopsided. In Geekbench Metal, the RX 6600 XT scores 88720 against the Pro Vega 16’s 29650, a delta of 199.2%. This nearly threefold advantage reflects the RX 6600 XT’s higher shader count and clock speeds, which directly translate to Metal API performance. The Pro Vega 16’s score, by contrast, is closer to entry-level territory, as its nearest rival in the overall dataset is the NVIDIA P106-100 with a 0% delta.

The Geekbench OpenCL test shows the widest gap. The RX 6600 XT produces a score of 80503, while the Pro Vega 16 manages only 18268, resulting in a 340.7% delta. This is the single largest performance difference in the entire comparison, underscoring the RX 6600 XT’s compute dominance. The Pro Vega 16’s FP32 throughput of 2.437 TFLOPS is simply insufficient to compete with the RX 6600 XT’s 10.60 TFLOPS, and the OpenCL benchmark captures that disparity directly.

Geekbench Vulkan follows a similar pattern, with the RX 6600 XT scoring 72417 versus the Pro Vega 16’s 21832, a 231.7% delta. The RX 6600 XT’s newer Vulkan 1.4 support and RDNA 2.0 architecture provide a substantial advantage in this modern API, while the Pro Vega 16’s GCN 5.0 design and Vulkan 1.3 support lag behind. Across all three tests, the RX 6600 XT’s wins total 3, with the Pro Vega 16 recording 0 wins. The data is unambiguous: in any shared workload, the RX 6600 XT delivers between two and four times the performance of the Pro Vega 16, making the latter a viable choice only for systems where its 75 W TDP and integrated form factor are mandatory.