NVIDIA GeForce GTX 675MX vs NVIDIA GeForce GTX 750 Comparison

Head-to-Head Benchmarks

The benchmark database records two compute-focused tests for this pairing, and in both the NVIDIA GeForce GTX 675MX comes out ahead. The largest margin appears in the Geekbench Metal test, where the GTX 675MX scores 6,131 against the GTX 750's 4,274, a 43.4% advantage. That is a substantial gap, and it suggests the older Kepler-based mobile part has a significant edge in Metal-accelerated workloads, at least as measured by this particular benchmark. The GTX 750's score of 4,274 places it well behind, and no other benchmark in the head-to-head set shows the GTX 750 closing that distance.

The second recorded test, Geekbench OpenCL, shows a narrower but still clear win for the GTX 675MX. It posts 10,723 points versus the GTX 750's 9,315, a 15.1% difference. While the margin is smaller than in Metal, it is consistent with the overall pattern: the GTX 675MX leads in both recorded metrics. The GTX 750's OpenCL result is respectable on its own, but it trails by more than 1,400 points, which is a meaningful gap in computational throughput.

Looking at the broader database context, the GTX 675MX holds an average benchmark score of 8,427 across all recorded tests, which places it at the 43rd percentile among all GPUs. Its nearest rivals in the database include the AMD Radeon 880M at 8,436, just 0.1% higher, and the NVIDIA GeForce MX330 at 8,458, 0.4% ahead. The AMD Radeon HD 8870M sits at 8,462, also 0.4% above, while the AMD Radeon R9 M375X trails at 8,325, which is 1.2% behind the GTX 675MX. The GTX 750, by comparison, has an average benchmark score of 7,222, placing it at the 40th percentile. Its nearest rivals include the AMD Radeon Vega 8 Mobile at 7,203, which is 0.3% behind, the NVIDIA GeForce GTX 560 SE at 7,171, 0.7% behind, and the Intel Iris Pro Graphics P580 at 7,170, also 0.7% behind. Interestingly, the NVIDIA GeForce GTX 970 appears as a rival with a score of 7,157, 0.9% lower than the GTX 750, which suggests that in this database's averaging, the GTX 750 slightly outranks a much higher-tier card in the same family.

The head-to-head win count is 2 for the GTX 675MX and 0 for the GTX 750. That is an unambiguous result within the recorded data. The GTX 675MX does not just win; it wins by margins that range from solid to overwhelming. The 43.4% Metal delta is particularly notable, as it indicates that the GTX 675MX's architecture and driver support for Metal deliver a substantially stronger result than the Maxwell-based GTX 750 in that specific API test.

It is notably the GTX 750 does have a Vulkan benchmark recorded in the database, scoring 8,078, but no corresponding Vulkan result exists for the GTX 675MX in this data set. Without a direct comparison, that score cannot be used to judge the head-to-head. It simply stands as a reference point for the GTX 750's capabilities in that API.

The Verdict

The data is clear: the NVIDIA GeForce GTX 675MX outperforms the NVIDIA GeForce GTX 750 in every benchmark where the two are directly compared. The GTX 675MX wins both recorded tests, with a 43.4% lead in Metal and a 15.1% lead in OpenCL. For any workload that relies on those APIs, the GTX 675MX is the stronger choice according to the database.

However, the context matters. The GTX 675MX is a mobile part, designed for MXM modules in laptops, with a TDP of 100 W. The GTX 750 is a desktop card with a TDP of 55 W, a single-slot cooler, and no power connectors required. It also has a suggested PSU of only 250 W. The GTX 750 is a low-power, compact solution that fits into small form factor systems and legacy desktops with minimal power delivery. The GTX 675MX, by contrast, is not a drop-in desktop card; it uses an MXM-B interface and is intended for portable devices, with display outputs listed as "Portable Device Dependent."

For users who already have a system that can accommodate an MXM module, the GTX 675MX is the performance pick. Its higher average benchmark score of 8,427 versus 7,222, and its higher percentile ranking at 43 versus 40, reinforce that conclusion. For users building or upgrading a desktop with limited power and space, the GTX 750 is the practical option, despite its lower scores. It offers a 55 W TDP, a 145 mm length, and no auxiliary power connectors, making it a flexible and easy installation. The GTX 675MX also has a 2 GB GDDR5 memory configuration on a 256-bit bus, while the GTX 750 has 1024 MB on a 128-bit bus, which is another factor in the GTX 675MX's favor for memory-hungry tasks.

Ultimately, the choice depends on the platform. The database shows the GTX 675MX is the faster card, but the GTX 750 is the more universally compatible and power-efficient part. Neither card is current; both are marked as end-of-life. The GTX 675MX was released in 2012, while the GTX 750 arrived in 2014. For legacy systems that match their respective interfaces, the GTX 675MX offers superior performance per the recorded benchmarks.

FAQ

Q: Which GPU has a higher average benchmark score?

A: The NVIDIA GeForce GTX 675MX has an average benchmark score of 8,427, while the NVIDIA GeForce GTX 750 has an average score of 7,222, a difference of 1,205 points.

Q: How much faster is the GTX 675MX in Geekbench Metal?

A: The GTX 675MX scores 6,131 in Geekbench Metal, which is 43.4% higher than the GTX 750's score of 4,274.

Q: Does the GTX 750 have any benchmark where it beats the GTX 675MX?

A: No. In the recorded head-to-head benchmarks, the GTX 675MX wins both the Geekbench Metal and Geekbench OpenCL tests. The GTX 750 has a Vulkan score of 8,078, but no Vulkan score is recorded for the GTX 675MX, so no comparison is possible.

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

A: The GTX 675MX has a TDP of 100 W, while the GTX 750 has a TDP of 55 W, making the GTX 750 significantly more power-efficient.

Q: Which card has more memory bandwidth?

A: The GTX 675MX has a memory bandwidth of 115.2 GB/s, while the GTX 750 has 80.19 GB/s. The GTX 675MX also has a wider 256-bit memory bus compared to the GTX 750's 128-bit bus.

Q: What are the release dates for these GPUs?

A: The GTX 675MX was released on 2012-09-30, and the GTX 750 was released on 2014-02-17.

Specification Differences

The two GPUs differ in several key specifications. The GTX 675MX uses a 294 mm² die with 3,540 million transistors, while the GTX 750 uses a much smaller 148 mm² die with 1,870 million transistors. The GTX 675MX has 960 shading units, 80 TMUs, and 32 ROPs, while the GTX 750 has 512 shading units, 32 TMUs, and 16 ROPs. Pixel rate is higher on the GTX 750 at 17.36 GPixel/s versus 13.08 GPixel/s for the GTX 675MX, but texture rate is higher on the GTX 675MX at 52.32 GTexel/s versus 34.72 GTexel/s. FP32 compute is also higher on the GTX 675MX at 1,255.7 GFLOPS versus 1,111.0 GFLOPS on the GTX 750.

Memory configurations differ substantially: the GTX 675MX has 2 GB of GDDR5 on a 256-bit bus with 115.2 GB/s bandwidth, while the GTX 750 has 1024 MB of GDDR5 on a 128-bit bus with 80.19 GB/s bandwidth. The GTX 750 has explicit base and boost clocks of 1020 MHz and 1085 MHz, while the GTX 675MX lists no base or boost clock in the database. Memory clock is 900 MHz (3.6 Gbps effective) for the GTX 675MX and 1253 MHz (5 Gbps effective) for the GTX 750.

The GTX 675MX has a TDP of 100 W and uses an MXM-B (3.0) bus interface, with no power connectors and slot width listed as "MXM Module." The GTX 750 has a TDP of 55 W, uses PCIe 3.0 x16, is single-slot, has no power connectors, and has a suggested PSU of 250 W. The GTX 750 also has a recorded length of 145 mm (5.7 inches) and display outputs of 2x DVI and 1x mini-HDMI 1.4a, while the GTX 675MX lists display outputs as "Portable Device Dependent." The GTX 750 has a launch MSRP of 119 USD; the GTX 675MX has no recorded launch MSRP.

Architecture Differences

The GTX 675MX is built on the Kepler architecture with the GK104 chip, while the GTX 750 uses the Maxwell architecture with the GM107 chip. Both are manufactured on a 28 nm process at TSMC, but the transistor density differs slightly: 12.0M / mm² for the GTX 675MX and 12.6M / mm² for the GTX 750. The GTX 675MX belongs to the GeForce 600M generation and is the predecessor of the GeForce 700M series, while the GTX 750 belongs to the GeForce 700 generation and is the successor to GeForce 600 and predecessor to GeForce 900.

In terms of API support, both cards support DirectX 12 (11_0) and OpenGL 4.6. Vulkan support differs: the GTX 675MX supports Vulkan 1.2.175, while the GTX 750 supports Vulkan 1.4, a newer version of the API specification. The GTX 675MX has a larger die and more transistors, reflecting its higher-end positioning in the mobile segment, whereas the GTX 750 is a compact desktop part with fewer resources but lower power draw. The GTX 675MX's higher shading unit count, TMU count, and ROP count align with its higher compute and texture rates, even though its pixel rate is lower due to clock differences. The GTX 750's Maxwell architecture brings a more efficient design, as evidenced by its higher transistor density and lower TDP despite having fewer transistors overall.