NVIDIA GeForce GTX 650 Ti Boost vs NVIDIA GeForce GTX 750 Comparison

Head-to-Head Benchmarks

The GeForce GTX 650 Ti Boost and the GeForce GTX 750 present a clear generational contrast, with the older Kepler card winning two of the three recorded benchmark tests. The largest margin comes in the geekbench_vulkan test, where the GTX 650 Ti Boost scores 10,041 against the GTX 750's 8,078. That is a 24.3% advantage, a decisive gap that points to the older card's superior raw compute throughput in a modern API. The delta is broad enough that no amount of driver optimization on the Maxwell part could realistically close it in this workload.

The geekbench_metal test also goes to the GTX 650 Ti Boost, though by a smaller margin. It records 4,858 versus 4,274 for the GTX 750, a 13.7% lead. Metal is a lower-level graphics API, and the Kepler card's higher shading unit count and wider memory bus contribute to this result. The GTX 650 Ti Boost fields 768 shading units and a 192-bit memory interface, while the GTX 750 operates with 512 shading units and a 128-bit bus. Those architectural differences show up directly in the Metal score.

The single win for the GTX 750 comes in the geekbench_opencl test, where it edges ahead with 9,315 versus 9,302 for the GTX 650 Ti Boost. That is a razor-thin 0.1% margin, effectively a statistical tie. The Maxwell architecture's compute efficiency per shader is higher, which allows the smaller chip to match the larger Kepler part in this particular OpenCL workload. Still, the practical performance difference here is negligible, and the result does not offset the two decisive losses in the other tests.

Looking at the average benchmark score across all recorded tests, the GTX 650 Ti Boost lands at 8,067, while the GTX 750 sits at 7,222. That is a roughly 11.7% gap in the aggregate. The GTX 650 Ti Boost's percentile ranking among all GPUs in the database is 42, compared to 40 for the GTX 750. Both cards sit in the lower-middle tier of the database, but the Kepler part consistently ranks slightly higher.

The nearest rival data reinforces the positioning. The GTX 650 Ti Boost sits within 0.3% of the NVIDIA GRID K2, the GeForce GTX 650 Ti, the GeForce GTX 880M, and the Quadro P5000, all clustered around an average score of roughly 8,040 to 8,080. The GTX 750, meanwhile, is within 0.9% of the AMD Radeon Vega 8 Mobile, the GeForce GTX 560 SE, the Intel Iris Pro Graphics P580, and the GeForce GTX 970, all hovering near 7,170 to 7,200. The two cards occupy different competitive neighborhoods, with the GTX 650 Ti Boost sitting in a slightly higher performance band.

The Verdict

The benchmark data is unambiguous. The GeForce GTX 650 Ti Boost is the faster card in the majority of recorded tests, winning two out of three head-to-head matchups. Its average benchmark score of 8,067 is higher than the GTX 750's 7,222, and its percentile ranking of 42 beats the GTX 750's 40. Anyone choosing purely on measured performance should select the GTX 650 Ti Boost.

The GTX 750 does have one redeeming quality in the data: its 55 W TDP is dramatically lower than the GTX 650 Ti Boost's 134 W. It requires no power connector, while the GTX 650 Ti Boost needs a single 6-pin connector. The GTX 750 is also a single-slot card at 145 mm in length, versus the dual-slot, 241 mm GTX 650 Ti Boost. For systems with restrictive power budgets or small chassis, the GTX 750 is the only viable choice in this pairing.

However, the GTX 750's advantage is purely in power and physical footprint, not in performance. Its launch MSRP was 119 USD, while the GTX 650 Ti Boost launched at 169 USD. The GTX 650 Ti Boost's higher price at launch corresponded to a higher performance tier, and the benchmark results confirm that relationship. In a straight performance comparison, the GTX 650 Ti Boost wins. In a power-constrained build, the GTX 750 is the sensible pick.

Where Each One Wins

The GTX 650 Ti Boost wins in any scenario that relies on sustained compute throughput. Its Vulkan score is 24.3% higher, and its Metal score is 13.7% higher. This suggests it is better suited for modern games that leverage Vulkan or Metal, as well as for compute-oriented tasks that use those APIs. The card's 2 GB of GDDR5 memory, 144.2 GB/s of bandwidth, and 1.585 TFLOPS of FP32 performance give it a clear edge in texture-heavy workloads and higher-resolution framebuffers.

The GTX 750 wins in scenarios where power draw and physical size are the primary constraints. Its 55 W TDP means it can be powered directly from the PCIe slot with no auxiliary connector, making it suitable for legacy or low-wattage power supplies. Its single-slot design and 145 mm length allow it to fit in compact cases where the GTX 650 Ti Boost's dual-slot, 241 mm footprint would not. The GTX 750 also has a slight edge in the geekbench_opencl test, though the 0.1% margin is too small to be a meaningful differentiator in real-world OpenCL applications.

For a general-purpose gaming build with no power restrictions, the GTX 650 Ti Boost is the clear winner. For a small form factor or low-power HTPC, the GTX 750 is the only option that makes sense from the data.

FAQ

Q: Which card has a higher average benchmark score?

A: The NVIDIA GeForce GTX 650 Ti Boost has an average benchmark score of 8,067, compared to 7,222 for the GTX 750.

Q: How much faster is the GTX 650 Ti Boost in Vulkan?

A: The GTX 650 Ti Boost scores 10,041 in the geekbench_vulkan test, which is 24.3% higher than the GTX 750's 8,078.

Q: Did the GTX 750 win any benchmark tests?

A: Yes, the GTX 750 won the geekbench_opencl test with a score of 9,315, narrowly edging out the GTX 650 Ti Boost's 9,302 by 0.1%.

Q: What is the TDP difference between the two cards?

A: The GTX 750 has a TDP of 55 W, while the GTX 650 Ti Boost has a TDP of 134 W.

Q: Which card requires a power connector?

A: The GTX 650 Ti Boost requires a single 6-pin power connector, while the GTX 750 has no power connectors and draws power entirely from the PCIe slot.

Q: How do their memory configurations differ?

A: The GTX 650 Ti Boost has 2 GB of GDDR5 memory on a 192-bit bus with 144.2 GB/s of bandwidth, while the GTX 750 has 1 GB of GDDR5 memory on a 128-bit bus with 80.19 GB/s of bandwidth.

Architecture Differences

The two cards come from different NVIDIA architectures and generations. The GTX 650 Ti Boost is built on the Kepler architecture with the GK106 chip, part of the GeForce 600 generation. The GTX 750 uses the Maxwell architecture with the GM107 chip, part of the GeForce 700 generation. Both are fabricated on a 28 nm process at TSMC, but the transistor layouts differ substantially.

The Kepler chip packs 2,540 million transistors on a 221 mm² die, giving a transistor density of 11.5M per mm². The Maxwell chip is smaller and denser: 1,870 million transistors on a 148 mm² die, resulting in 12.6M per mm². The higher density indicates a more efficient design, which helps explain the GTX 750's superior performance-per-watt.

The compute resources are substantially different. The GTX 650 Ti Boost has 768 shading units, 64 texture mapping units, and 24 ROPs. The GTX 750 has 512 shading units, 32 TMUs, and 16 ROPs. The Kepler card's raw throughput is higher across the board: 1.585 TFLOPS of FP32 performance, 66.05 GTexel/s of texture rate, and 16.51 GPixel/s of pixel rate. The GTX 750 delivers 1,111 GFLOPS, 34.72 GTexel/s, and 17.36 GPixel/s. Interestingly, the GTX 750 has a slightly higher pixel rate due to its higher clock speeds, despite having fewer ROPs.

Clock speeds favor the GTX 750 on paper. Its base clock is 1020 MHz with a boost of 1085 MHz, while the GTX 650 Ti Boost runs at 980 MHz base and 1032 MHz boost. The memory clocks also differ: the GTX 750 runs at 1253 MHz (5 Gbps effective), while the GTX 650 Ti Boost runs at 1502 MHz (6 Gbps effective). Despite the lower clock, the GTX 650 Ti Boost's wider 192-bit bus gives it significantly more memory bandwidth.

Memory capacity is another differentiator. The GTX 650 Ti Boost has 2 GB of GDDR5, while the GTX 750 has only 1 GB. In modern games that exceed 1 GB of VRAM usage, the GTX 650 Ti Boost has a clear advantage that is not fully captured in the compute benchmark scores.

The API support is similar, with both cards supporting DirectX 12 (11_0) and OpenGL 4.6. The GTX 650 Ti Boost supports Vulkan 1.2.175, while the GTX 750 supports Vulkan 1.4. Both cards are end-of-life products, with the GTX 650 Ti Boost released in March 2013 and the GTX 750 in February 2014. The GTX 650 Ti Boost's predecessor is the GeForce 500 series with the GeForce 700 as successor, while the GTX 750's predecessor is the GeForce 600 with the GeForce 900 as successor.

Physical design separates the two as well. The GTX 650 Ti Boost is a dual-slot card measuring 241 mm (9.5 inches) in length, with a single 6-pin power connector and a suggested PSU of 300 W. The GTX 750 is a single-slot card at 145 mm (5.7 inches), with no power connector and a suggested PSU of 250 W. The GTX 650 Ti Boost offers more display outputs, including 2x DVI, 1x HDMI 1.4a, and 1x DisplayPort 1.2, while the GTX 750 offers 2x DVI and 1x mini-HDMI 1.4a.