NVIDIA GeForce GT 755M vs NVIDIA GeForce GTX 460M Comparison

The GeForce GT 755M is the clear winner in this comparison, delivering a 13.2% higher Geekbench OpenCL score than the GeForce GTX 460M (4934 vs 4282). The GTX 460M holds a slight edge over some older rivals, but the GT 755M’s newer Kepler architecture, higher clocks, and greater shader count make it the more capable mobile GPU. The GTX 460M is best suited for legacy systems where its 192-bit memory bus and 60.00 GB/s bandwidth matter, while the GT 755M is the pick for anyone wanting better raw compute and modern API support.

The Verdict

For anyone choosing between these two, the data points decisively to the NVIDIA GeForce GT 755M. Its Geekbench OpenCL score of 4934 beats the GTX 460M’s 4282 by 13.2%. The GT 755M also offers double the shading units (384 vs 192), a 60% higher texture rate (32.64 GTexel/s vs 21.60 GTexel/s), and a higher pixel rate (8.160 GPixel/s vs 5.400 GPixel/s). The only category where the GTX 460M leads is memory bus width (192-bit vs 128-bit) and bandwidth (60.00 GB/s vs 86.40 GB/s) — wait, the GT 755M actually has higher bandwidth at 86.40 GB/s. The GTX 460M’s wider bus does not compensate for its slower memory clock.

The GT 755M is the choice for users who need better compute performance, as evidenced by its higher OpenCL score and modern features like Vulkan 1.2.175 support. The GTX 460M, being from the older Fermi generation, still supports DirectX 12 (11_0) and OpenGL 4.6, so it is not obsolete for older titles. However, its 25th percentile ranking versus the GT 755M’s 24th percentile shows both are below average, but the GT 755M is slightly more competitive relative to all GPUs. For a modern user, the GT 755M’s 2 GB memory (vs 1536 MB) and faster effective memory speed (5.4 Gbps vs 2.5 Gbps) make it the better all-rounder. The GTX 460M is only preferable if you are restricted to a system that specifically requires its 192-bit bus or older MXM module compatibility.

FAQ

Q: Which GPU has a higher Geekbench OpenCL score?

A: The GeForce GT 755M scores 4934, which is 13.2% higher than the GeForce GTX 460M’s 4282.

Q: What is the difference in shading units between the two?

A: The GT 755M has 384 shading units, exactly double the GTX 460M’s 192 shading units.

Q: Do both GPUs support the same DirectX version?

A: Yes, both support DirectX 12 (11_0) and OpenGL 4.6, but the GT 755M additionally supports Vulkan 1.2.175, while the GTX 460M has no Vulkan support listed.

Q: How does memory bandwidth compare?

A: The GT 755M delivers 86.40 GB/s, which is 44% higher than the GTX 460M’s 60.00 GB/s, despite having a narrower 128-bit bus versus 192-bit.

Q: Which GPU has a higher pixel rate?

A: The GT 755M has a pixel rate of 8.160 GPixel/s, compared to the GTX 460M’s 5.400 GPixel/s, a 51% advantage.

Q: What is the transistor density difference?

A: The GT 755M packs 10.8M transistors per mm² on a 28 nm node, while the GTX 460M has 4.9M per mm² on a 40 nm node, reflecting the newer manufacturing process.

Architecture Differences

The two GPUs come from entirely different NVIDIA architectures. The GTX 460M is built on the Fermi architecture with the GF106 chip, while the GT 755M uses the Kepler architecture with the GK107 chip. This generational shift is visible in the process nodes: the GTX 460M uses a 40 nm process, whereas the GT 755M uses a smaller 28 nm process, both fabricated by TSMC. The smaller node allows the GT 755M to fit 1,270 million transistors on a die size of 118 mm², versus the GTX 460M’s 1,170 million transistors on a much larger 238 mm² die. This results in a transistor density of 10.8M / mm² for the GT 755M, more than double the GTX 460M’s 4.9M / mm².

The shader architecture also differs significantly. The GTX 460M has 192 shading units, 32 TMUs, and 24 ROPs. The GT 755M doubles the shading units to 384 but reduces ROPs to 16, while keeping the same 32 TMUs. The Kepler architecture is known for being more efficient per clock, which is reflected in the GT 755M’s higher clock speeds: it has a base clock of 980 MHz and a boost clock of 1020 MHz, whereas the GTX 460M has no listed base or boost clocks. The GT 755M also supports Vulkan 1.2.175, a modern API that the GTX 460M lacks, though both share DirectX 12 (11_0) and OpenGL 4.6 support.

Memory architecture is another key divergence. The GTX 460M uses a 192-bit bus with 1536 MB of GDDR5, while the GT 755M uses a 128-bit bus with 2 GB of GDDR5. Despite the narrower bus, the GT 755M achieves higher bandwidth (86.40 GB/s vs 60.00 GB/s) due to its faster memory clock: 1350 MHz (5.4 Gbps effective) versus 625 MHz (2.5 Gbps effective). The GT 755M also supports PCIe 3.0 x16, while the GTX 460M is limited to PCIe 2.0 x16.

Specification Differences

The most obvious difference is the architecture: Fermi (GF106) for the GTX 460M versus Kepler (GK107) for the GT 755M. The process node shrinks from 40 nm to 28 nm, and the die size drops from 238 mm² to 118 mm², even though the GT 755M has more transistors (1,270 million vs 1,170 million). The GT 755M has a base clock of 980 MHz and a boost clock of 1020 MHz, while the GTX 460M has no base or boost clock listed. Memory clocks differ dramatically: the GTX 460M runs at 625 MHz (2.5 Gbps effective), while the GT 755M runs at 1350 MHz (5.4 Gbps effective).

Memory configuration changes from 1536 MB on a 192-bit bus to 2 GB on a 128-bit bus. Bandwidth improves from 60.00 GB/s to 86.40 GB/s. Shading units double from 192 to 384, while ROPs drop from 24 to 16. Pixel rate rises from 5.400 GPixel/s to 8.160 GPixel/s, and texture rate rises from 21.60 GTexel/s to 32.64 GTexel/s. FP32 performance increases from 518.4 GFLOPS to 783.4 GFLOPS. Both have a TDP of 50 W and use MXM Module slot width with no power connectors. The bus interface moves from PCIe 2.0 x16 to PCIe 3.0 x16. The GTX 460M has no Vulkan support listed, while the GT 755M supports Vulkan 1.2.175. The GTX 460M was released on 2010-09-02, and the GT 755M on 2013-06-24.

Head-to-Head Benchmarks

The single head-to-head benchmark is Geekbench OpenCL, and the GT 755M wins decisively. It scores 4934 against the GTX 460M’s 4282, a delta of -13.2% from the GTX 460M’s perspective (meaning the GTX 460M is 13.2% slower). This is a substantial gap in a compute workload that exercises the GPU’s shader units and memory subsystem. The GT 755M’s advantage is consistent with its specification lead: it has double the shading units (384 vs 192) and higher clocks (980 MHz base vs none listed for the GTX 460M), which directly translates to higher FP32 throughput (783.4 GFLOPS vs 518.4 GFLOPS).

In terms of relative standing, the GTX 460M sits at the 25th percentile of all GPUs, with an average benchmark score of 4282. Its nearest rivals include the AMD FirePro W2100 (4295, only 0.3% higher) and the AMD Radeon Vega 3 (4268, 0.3% lower). The GT 755M, at the 24th percentile, has an average score of 4033, but its OpenCL score of 4934 is higher than its average because it also has a lower Geekbench Metal score of 3132. Its rivals include the Intel HD Graphics 630 (4075, 1% higher) and the AMD Radeon RX 9060 XT 8 GB (4093, 1.5% higher). Notably, the GTX 460M is only 1.2% slower than an NVIDIA GeForce RTX 4070 GDDR6 in this benchmark, which shows the benchmark’s quirks rather than the GTX 460M’s modern competitiveness.

Where Each One Wins

The GT 755M wins the only benchmark test in the data, so it is the clear compute winner. Its advantages are most pronounced in tasks that leverage its 384 shading units and higher clocks. The 13.2% OpenCL lead means it will handle general-purpose GPU compute, video encoding, and OpenCL-accelerated applications more effectively. Its 2 GB memory (vs 1536 MB) and higher bandwidth (86.40 GB/s vs 60.00 GB/s) also make it better for running modern games that need more VRAM, even if the memory bus is narrower. The Vulkan 1.2.175 support is an additional benefit for users running Vulkan-based games or applications.

The GTX 460M’s strengths are narrower. It has a 192-bit memory bus, which is wider than the GT 755M’s 128-bit bus, but this does not result in higher bandwidth. The GTX 460M also has more ROPs (24 vs 16), which could theoretically help with fill-rate-bound scenarios, but its pixel rate is actually lower (5.400 GPixel/s vs 8.160 GPixel/s). The GTX 460M’s 25th percentile rank is marginally better than the GT 755M’s 24th percentile, but this is based on average scores that include the GT 755M’s weaker Metal result. In the only direct comparison, the GTX 460M has no wins (0 wins vs 1 win for the GT 755M). Therefore, the GTX 460M is only a choice for legacy system compatibility, particularly if a motherboard or chassis requires a specific MXM module variant from that 2010 era. For any practical purpose, the GT 755M is the superior mobile GPU.