AMD Radeon RX 550X vs NVIDIA GeForce GTX 960 Comparison

Head-to-Head Benchmarks

The recorded data presents a split decision, with each card taking one decisive victory in the two shared benchmark tests. The most dramatic gap appears in Geekbench OpenCL, where the NVIDIA GeForce GTX 960 delivers a score of 18,925 against the AMD Radeon RX 550X's 9,662. This translates to a 48.9% advantage for the NVIDIA card, a massive margin that dwarfs any other difference in the comparison. In compute-heavy workloads that rely on OpenCL, the GTX 960 is in a different tier entirely.

The tables turn completely in the Geekbench Vulkan test. Here, the AMD Radeon RX 550X posts a score of 11,299, while the NVIDIA GeForce GTX 960 manages only 9,231. The AMD card leads by 22.4%, a substantial reversal that shows a clear architectural preference for Vulkan's low-level API design. The RX 550X is not merely competitive in this test; it is decisively ahead, and the delta is large enough to suggest a systematic advantage rather than a marginal one.

Looking at the aggregate numbers, the AMD card's average benchmark score across all recorded tests is 10,481, while the NVIDIA card's average sits at 9,273. This is a curious inversion: despite losing the OpenCL test by nearly half, the RX 550X still holds a higher overall average because its Vulkan score is strong enough to offset that deficit. The percentile rankings tell a similar story, with the RX 550X landing in the 49th percentile of all GPUs and the GTX 960 in the 45th.

The nearest rivals in the database add context to each card's standing. The RX 550X sits within 1.4% of the AMD Radeon RX 6600S (10,629), within 1% of the AMD Radeon R9 M275X (10,582), and just 1.2% ahead of the AMD Radeon RX 6500M (10,362). The GTX 960 is tightly clustered with the NVIDIA GeForce GTX 465 (9,294), the NVIDIA GeForce GTX 850M (9,302), and the AMD Radeon R7 M380 (9,313), with deltas of 0.2% to 0.4%. Neither card is an outlier in its peer group, but the RX 550X's average is buoyed by its Vulkan performance in a way that the GTX 960's is not.

Where Each One Wins

The use-case split is stark and follows the benchmark results directly. The NVIDIA GeForce GTX 960 is the clear choice for any workload that leverages OpenCL. Its 48.9% lead in that test is the single largest performance gap in the entire comparison, and it suggests that compute tasks, GPGPU acceleration, and any application built around OpenCL will run substantially faster on the GTX 960. The card's raw compute resources back this up: it has 1,024 shading units, 64 texture mapping units, and 32 ROPs, double the AMD card's 512 shading units, 32 TMUs, and 16 ROPs.

The AMD Radeon RX 550X wins in the Vulkan API domain. Its 22.4% lead in Geekbench Vulkan indicates that modern game engines and applications that use Vulkan will perform better on the AMD card, despite its smaller hardware resource allocation. This is not a small edge; it is a significant advantage that could translate into real-world frame rate differences in Vulkan-based titles. The RX 550X also has a higher overall average benchmark score (10,481 vs. 9,273), which suggests it is the more balanced performer across the two tests that were run.

For users who prioritize the latest graphics API, the RX 550X is the better option. For those who need OpenCL throughput, the GTX 960 is the only logical choice. The data does not support a single "winner" across all scenarios; it supports two distinct winners in two distinct environments.

Architecture Differences

The two cards come from opposite ends of the GPU design spectrum. The AMD Radeon RX 550X uses the Lexa chip built on the GCN 4.0 architecture, manufactured on a 14 nm process at GlobalFoundries. The die is a compact 103 mm² with 2,200 million transistors, yielding a transistor density of 21.4 million per mm². The NVIDIA GeForce GTX 960 uses the GM206 chip on the Maxwell 2.0 architecture, fabricated by TSMC on a 28 nm process. Its die is 228 mm², housing 2,940 million transistors at a density of 12.9 million per mm².

The clock behavior also differs. The RX 550X has a base clock of 1100 MHz and a boost of 1183 MHz, with memory running at 1500 MHz (6 Gbps effective). The GTX 960 starts at 1127 MHz base and boosts to 1178 MHz, with memory at 1753 MHz (7 Gbps effective). Despite the GTX 960's higher memory clock, its bandwidth advantage is modest: 112.2 GB/s versus 96.00 GB/s, both on a 128-bit bus.

Memory capacity is a notable point of divergence. The RX 550X ships with 4 GB of GDDR5, while the GTX 960 has only 2 GB of GDDR5. In modern workloads, the extra capacity on the AMD card could be a practical advantage, even if the bandwidth is lower. The GTX 960 compensates with higher pixel and texture rates: 37.70 GPixel/s and 75.39 GTexel/s, compared to the RX 550X's 18.93 GPixel/s and 37.86 GTexel/s. The FP32 compute figures are also lopsided, with the GTX 960 at 2.413 TFLOPS versus the RX 550X's 1,211.4 GFLOPS. The RX 550X does support FP16 at a 1:1 ratio, while the GTX 960 has no recorded FP16 capability.

Power and physical design further separate the two. The RX 550X is a 50 W part with no power connectors and a suggested PSU of 250 W, while the GTX 960 draws 120 W and requires a single 6-pin connector with a 300 W PSU suggestion. The RX 550X is shorter at 145 mm (5.7 inches), versus the GTX 960's 241 mm (9.5 inches). Both are dual-slot cards. The RX 550X uses a PCIe 3.0 x8 interface; the GTX 960 uses PCIe 3.0 x16. Display outputs differ: the RX 550X offers 1x DVI, 1x HDMI 2.0b, and 1x DisplayPort 1.4a, while the GTX 960 offers 1x DVI, 1x HDMI 2.0, and 3x DisplayPort 1.2. API support is similar, though the GTX 960 reaches DirectX 12_1 and Vulkan 1.4, while the RX 550X tops out at DirectX 12_0 and Vulkan 1.3. The GTX 960 also carries a launch MSRP of 199 USD.

The Verdict

The data points to two very different purchasing decisions depending on the target workload. If the primary use case involves OpenCL compute, the NVIDIA GeForce GTX 960 is the definitive pick. Its 48.9% lead in that benchmark is insurmountable, and its higher pixel rate, texture rate, and FP32 throughput support its dominance in raw compute. The GTX 960 also has more shading units, TMUs, and ROPs, giving it a structural advantage in traditional rasterization tasks.

If the workload is Vulkan-centric, the AMD Radeon RX 550X is the better choice. Its 22.4% lead in Geekbench Vulkan, combined with its higher average benchmark score (10,481 vs. 9,273) and larger 4 GB memory buffer, makes it the more future-proof option for modern API environments. The RX 550X also runs at a much lower 50 W TDP, requires no power connectors, and is shorter in length, which makes it easier to install in compact systems.

The GTX 960's higher percentile rank (45th vs. 49th is actually lower, so the RX 550X ranks higher) is misleading; the RX 550X sits in the 49th percentile of all GPUs, while the GTX 960 sits in the 45th. That ranking aligns with the average score advantage for the AMD card. However, the GTX 960's OpenCL score is so far ahead that it should be the default recommendation for compute-heavy users. The RX 550X should be the default for gamers and users who prioritize Vulkan performance and lower power draw. Both cards are end-of-life, so availability and driver support should be verified before purchase.

FAQ

Q: Which card has a higher average benchmark score?

A: The AMD Radeon RX 550X has an average benchmark score of 10,481, while the NVIDIA GeForce GTX 960 has an average of 9,273.

Q: How large is the OpenCL performance gap between the two cards?

A: The NVIDIA GeForce GTX 960 scores 18,925 in Geekbench OpenCL, which is 48.9% higher than the AMD Radeon RX 550X's score of 9,662.

Q: Which card performs better in Vulkan benchmarks?

A: The AMD Radeon RX 550X scores 11,299 in Geekbench Vulkan, a 22.4% lead over the NVIDIA GeForce GTX 960's 9,231.

Q: What are the memory sizes of the two cards?

A: The AMD Radeon RX 550X has 4 GB of GDDR5 memory, while the NVIDIA GeForce GTX 960 has 2 GB of GDDR5 memory.

Q: What is the TDP difference between the cards?

A: The AMD Radeon RX 550X has a 50 W TDP and requires no power connectors, while the NVIDIA GeForce GTX 960 has a 120 W TDP and needs a single 6-pin connector.

Q: Which card has more shading units?

A: The NVIDIA GeForce GTX 960 has 1,024 shading units, double the 512 shading units on the AMD Radeon RX 550X.