NVIDIA A2 vs NVIDIA GeForce GTX TITAN X Comparison

# Head-to-Head Benchmarks

The benchmark data reveals a decisive performance advantage for the NVIDIA GeForce GTX TITAN X across both shared test workloads. In the Geekbench OpenCL test, the GTX TITAN X scores 41,471 against the NVIDIA A2's 35,357, a 17.3% lead. That margin expands dramatically in the Geekbench Vulkan test, where the GTX TITAN X posts 49,397 versus the A2's 34,023 — a 45.2% gap. The Vulkan result is particularly striking: the GTX TITAN X outperforms the A2 by nearly half again, indicating that the older Maxwell architecture retains a substantial edge in this API workload despite being six years older.

The head-to-head tally is 2 wins for the GTX TITAN X and 0 for the A2. No benchmark in the dataset shows the A2 ahead. The average benchmark score reinforces this ordering: the GTX TITAN X averages 36,530 across all tests, while the A2 averages 34,690 — a 5.3% overall difference. However, the average scores mask the uneven distribution; the Vulkan delta is the outlier that drives much of the separation.

Context from the nearest-rival comparisons adds nuance. The GTX TITAN X's average score places it 0% from the AMD Radeon RX 5300M (36,529), 0.7% ahead of the NVIDIA T1000 (36,289), and 1.9% ahead of the AMD Radeon Pro Duo (35,860). Interestingly, it trails the AMD Radeon PRO W6400 (37,157) by 1.7%. The A2's average score sits 0.4% behind the NVIDIA T1000 8 GB (34,561) and 0.4% behind the AMD Radeon HD 7970 (34,541), while leading the NVIDIA TITAN V (34,355) by 1% and the NVIDIA RTX A1000 (34,207) by 1.4%. These narrow deltas around the A2's score suggest it sits in a tightly clustered performance tier, whereas the GTX TITAN X's Vulkan score pushes it into a higher bracket for that specific workload.

# Where Each One Wins

The GTX TITAN X wins decisively in compute-heavy synthetic workloads, particularly those leveraging Vulkan. Its 49,397 Vulkan score is not just a head-to-head win — it represents a benchmark result 45.2% above the A2, which is a massive single-test differential. For applications that rely on Vulkan compute or rendering, the GTX TITAN X is the clear choice based on this data. The OpenCL result, while closer at 17.3%, still favors the GTX TITAN X with a 41,471 score versus 35,357. Users prioritizing raw OpenCL throughput would see a meaningful performance uplift with the GTX TITAN X.

The A2's strengths lie outside the benchmark suite, in areas the data does not directly quantify. Its 60 W TDP versus the GTX TITAN X's 250 W suggests dramatically lower power draw, and its single-slot width with no power connectors indicates a form factor optimized for density rather than peak performance. The A2's 16 GB GDDR6 memory, while on a narrower 128-bit bus, exceeds the GTX TITAN X's 12 GB GDDR5 in capacity. For workloads that need more memory than compute throughput — such as large model inference or data-parallel tasks that fit within 16 GB — the A2 may be preferable, though the benchmark scores do not directly reflect such scenarios. The A2 also supports PCIe 4.0 x8, doubling the per-lane bandwidth of the GTX TITAN X's PCIe 3.0 x16, which could matter for data transfer-bound tasks.

No benchmark in the dataset shows the A2 winning any test. Its two recorded scores — 35,357 in OpenCL and 34,023 in Vulkan — both fall below the GTX TITAN X's corresponding results. The A2's percentile rank of 79 versus the GTX TITAN X's 80 indicates near-identical standing across all GPUs, but that aggregate metric obscures the large head-to-head deltas.

# Architecture Differences

The two GPUs represent fundamentally different design philosophies separated by two technology generations. The GTX TITAN X uses the GM200 chip on a 28 nm TSMC process, packing 8,000 million transistors into a 601 mm² die — a transistor density of 13.3 million per square millimeter. The A2 uses the GA107 chip on Samsung's 8 nm process, with 8,700 million transistors in a 200 mm² die, achieving 43.5 million transistors per square millimeter — more than three times the density. The A2's process advantage is stark: it packs 8.75% more transistors into roughly one-third the silicon area.

The compute configurations diverge sharply. The GTX TITAN X deploys 3,072 shading units, 192 texture mapping units, and 96 ROPs, yielding a pixel rate of 104.5 GPixel/s and a texture rate of 209.1 GTexel/s. The A2 has 1,280 shading units, 40 TMUs, and 32 ROPs, producing 56.64 GPixel/s and 70.80 GTexel/s — roughly half the pixel throughput and one-third the texture throughput. The FP32 compute figures follow suit: 6.691 TFLOPS for the GTX TITAN X versus 4.531 TFLOPS for the A2. The A2 does offer FP16 at 4.531 TFLOPS (1:1), while the GTX TITAN X has no listed FP16 capability. The A2 also includes 10 RT cores and 40 tensor cores, features absent from the GTX TITAN X entirely.

Memory subsystems differ in capacity, type, and bandwidth. The GTX TITAN X uses 12 GB GDDR5 on a 384-bit bus, delivering 336.6 GB/s. The A2 uses 16 GB GDDR6 on a 128-bit bus, delivering 200.1 GB/s. Despite the A2's newer memory type and larger capacity, its bandwidth is 40.5% lower due to the narrower bus. Clock speeds tell a similar story: the GTX TITAN X runs at 1000 MHz base and 1089 MHz boost, while the A2 runs at 1440 MHz base and 1770 MHz boost — the A2's higher clocks cannot compensate for its reduced compute units and memory bandwidth.

Feature support also diverges. The GTX TITAN X supports DirectX 12 (12_1), OpenGL 4.6, and Vulkan 1.4, with display outputs including DVI, HDMI 2.0, and three DisplayPort 1.2 connections. The A2 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, but has no display outputs — it is a compute-only accelerator. The A2's bus interface is PCIe 4.0 x8 versus the GTX TITAN X's PCIe 3.0 x16; the A2's interface is newer but narrower. Power requirements highlight the A2's efficiency focus: 60 W TDP with no power connectors versus 250 W with 1x 6-pin and 1x 8-pin connectors, and a 250 W suggested PSU versus 600 W.

# The Verdict

The data indicates that for any benchmark-visible workload, the NVIDIA GeForce GTX TITAN X is the superior performer. Its 17.3% OpenCL lead and 45.2% Vulkan lead are unambiguous. The GTX TITAN X also holds a 5.3% advantage in average benchmark score. Users selecting a GPU for compute tasks measured by Geekbench should choose the GTX TITAN X without hesitation. The GTX TITAN X's 80th percentile rank versus the A2's 79th, while close, does not reflect the magnitude of the head-to-head deltas.

The NVIDIA A2's case rests on factors outside the benchmark data. Its 60 W TDP, single-slot design, and absence of power connectors make it suitable for dense server installations where power and space are constrained. Its 16 GB memory capacity exceeds the GTX TITAN X's 12 GB, and its tensor and RT cores provide hardware acceleration for AI and ray-tracing workloads that the GTX TITAN X lacks entirely. The A2's 8 nm process and PCIe 4.0 support also point to a more modern foundation. For users prioritizing these capabilities over raw benchmark scores, the A2 remains relevant. However, the benchmark results show no scenario among the tested workloads where the A2 wins.

The GTX TITAN X's launch MSRP was 999 USD. The A2 has no launch MSRP listed. The GTX TITAN X is marked end-of-life with release date 2015-03-16, while the A2 is also end-of-life with release date 2021-11-09.

# FAQ

Q: Which GPU has the higher OpenCL benchmark score?

A: The NVIDIA GeForce GTX TITAN X scores 41,471 in Geekbench OpenCL, which is 17.3% higher than the NVIDIA A2's 35,357.

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

A: The GTX TITAN X scores 49,397 in Geekbench Vulkan versus the A2's 34,023, giving the GTX TITAN X a 45.2% lead.

Q: Does the NVIDIA A2 win any benchmark in the head-to-head comparison?

A: No. The head-to-head dataset shows 2 wins for the GTX TITAN X and 0 wins for the A2 across the OpenCL and Vulkan tests.

Q: What is the memory capacity and type difference?

A: The GTX TITAN X has 12 GB of GDDR5 memory on a 384-bit bus with 336.6 GB/s bandwidth. The A2 has 16 GB of GDDR6 memory on a 128-bit bus with 200.1 GB/s bandwidth.

Q: How do the power requirements compare?

A: The GTX TITAN X has a 250 W TDP with 1x 6-pin and 1x 8-pin power connectors and a 600 W suggested PSU. The A2 has a 60 W TDP with no power connectors and a 250 W suggested PSU.

Q: Which GPU has tensor and RT cores?

A: Only the NVIDIA A2 includes 40 tensor cores and 10 RT cores. The GTX TITAN X has neither, as its Maxwell 2.0 architecture predates these features.