NVIDIA GeForce GTX 650 Ti Boost vs NVIDIA GeForce GTX 675M Comparison

Head-to-Head Benchmarks

The database records one direct benchmark comparison between the NVIDIA GeForce GTX 650 Ti Boost and the NVIDIA GeForce GTX 675M. In the Geekbench OpenCL test, the GTX 650 Ti Boost scores 9302, while the GTX 675M scores 6946. This gives the GTX 650 Ti Boost a 33.9% lead, a decisive margin that separates the two GPUs clearly in compute workloads.

The GTX 650 Ti Boost’s average benchmark score across all recorded tests is 8067, while the GTX 675M’s average is 6946. That difference of roughly 16% in average performance stems from the GTX 650 Ti Boost also having Geekbench Vulkan and Metal results recorded, whereas the GTX 675M only has the OpenCL result. Even when isolating the shared test, the OpenCL gap is substantial.

Looking at the percentile ranks, the GTX 650 Ti Boost sits at the 42nd percentile among all GPUs, while the GTX 675M ranks at the 39th percentile. This places both in the mid-range of the database, but the GTX 650 Ti Boost holds a clear positional advantage. Its nearest rivals include the NVIDIA GRID K2 (average score 8080, delta -0.2%), the NVIDIA GeForce GTX 650 Ti (8053, delta 0.2%), the NVIDIA GeForce GTX 880M (8040, delta 0.3%), and the NVIDIA Quadro P5000 (8039, delta 0.3%). The GTX 650 Ti Boost essentially trades blows with these cards, sitting within a fraction of a percent of each one.

The GTX 675M’s nearest rivals tell a similar story of tight clustering. The AMD Radeon R5 M240 scores 6975 (delta -0.4%), the NVIDIA GeForce GTX 680M scores 7023 (delta -1.1%), the NVIDIA T600 scores 7035 (delta -1.3%), and the AMD FirePro M5100 scores 6830 (delta 1.7%). The GTX 675M is thus bracketed by a small group of mobile and low-profile cards, with no rival more than 1.7% away in either direction.

The head-to-head record is straightforward: the GTX 650 Ti Boost wins 1 benchmark, the GTX 675M wins 0. There is no recorded test where the GTX 675M outperforms the GTX 650 Ti Boost. The OpenCL result alone shows a 33.9% advantage for the newer desktop part, which is a substantial gap in raw compute throughput.

Where Each One Wins

The GTX 650 Ti Boost wins in every recorded category. Its OpenCL score of 9302 versus 6946 is the only direct comparison, but the broader benchmark set adds context. The GTX 650 Ti Boost also posts a Geekbench Vulkan score of 10041 and a Geekbench Metal score of 4858, giving it a multi-API profile. The GTX 675M has no Vulkan or Metal scores recorded, so its capabilities in those APIs are unquantified in the database.

For compute-oriented tasks, the GTX 650 Ti Boost is the clear choice. Its FP32 throughput of 1.585 TFLOPS dwarfs the GTX 675M’s 952.3 GFLOPS, a difference of roughly 66%. The texture rate tells a similar story: 66.05 GTexel/s versus 39.68 GTexel/s, an advantage of about 66% as well. Pixel rate favors the GTX 650 Ti Boost at 16.51 GPixel/s versus 9.920 GPixel/s, a 66% lead again. These three metrics align closely, indicating the GTX 650 Ti Boost’s architecture simply delivers more raw throughput per clock across the board.

Memory bandwidth is another area where the GTX 650 Ti Boost pulls ahead. It offers 144.2 GB/s over a 192-bit bus, while the GTX 675M offers 96.00 GB/s over a wider 256-bit bus. The GTX 650 Ti Boost compensates for its narrower bus with faster memory clocks: 1502 MHz (6 Gbps effective) versus 750 MHz (3 Gbps effective). The net result is 50% more bandwidth for the GTX 650 Ti Boost.

The GTX 675M does hold advantages in a few hardware specifications, though these do not translate into benchmark wins. It has 32 ROPs versus 24 on the GTX 650 Ti Boost, a 33% higher count. It also has a 256-bit memory bus versus 192-bit, which helps its bandwidth despite the lower clock. However, the GTX 650 Ti Boost counters with 768 shading units versus 384, exactly double, and 64 TMUs on both cards. The shading unit advantage is decisive in compute workloads.

For gaming, the data suggests the GTX 650 Ti Boost would handle higher resolutions and texture loads better due to its bandwidth and fillrate advantages. The GTX 675M’s higher ROP count could help in certain pixel-bound scenarios, but no recorded benchmark demonstrates this. The GTX 650 Ti Boost’s 2 GB GDDR5 memory matches the GTX 675M’s 2 GB, so capacity is not a differentiator.

The Verdict

The recorded data points to a clear winner: the NVIDIA GeForce GTX 650 Ti Boost. It wins the only head-to-head benchmark by 33.9%, holds a higher average benchmark score (8067 versus 6946), and ranks higher in the overall percentile distribution (42nd versus 39th). For any user choosing between these two based on database measurements, the GTX 650 Ti Boost is the superior performer.

The GTX 650 Ti Boost is the pick for compute workloads, OpenCL applications, and any task that leverages shading unit throughput. Its 768 shading units, 1.585 TFLOPS FP32, and 66.05 GTexel/s texture rate give it a commanding lead over the GTX 675M’s 384 shading units and 952.3 GFLOPS. The 33.9% OpenCL delta is consistent with these architectural advantages.

The GTX 675M is not without merit, but its strengths are narrower. Its 100 W TDP is lower than the GTX 650 Ti Boost’s 134 W, making it a more power-efficient part. Its MXM module form factor also suits laptop integration, whereas the GTX 650 Ti Boost is a dual-slot desktop card requiring a 6-pin power connector and a 300 W suggested PSU. For a mobile user who needs a GPU in an MXM slot, the GTX 675M is the only option of the two.

However, from a pure performance standpoint, the GTX 650 Ti Boost wins every recorded test. The GTX 675M’s nearest rivals cluster around the 6946 to 7035 range, and it sits within 1.7% of each one. The GTX 650 Ti Boost, by contrast, sits within 0.3% of rivals like the GTX 880M and Quadro P5000, which are substantially faster than the GTX 675M’s peer group. The performance tier difference is clear.

Buyers should choose the GTX 650 Ti Boost if they have a desktop system with a PCIe 3.0 x16 slot and a 300 W PSU. The GTX 675M makes sense only for MXM-based laptops where the GTX 650 Ti Boost cannot physically be installed. In every benchmark scenario recorded, the GTX 650 Ti Boost delivers more performance.

FAQ

Q: How much faster is the GTX 650 Ti Boost than the GTX 675M in OpenCL?

A: The GTX 650 Ti Boost scores 9302 in Geekbench OpenCL, while the GTX 675M scores 6946. That is a 33.9% advantage for the GTX 650 Ti Boost.

Q: Which GPU has more shading units?

A: The GTX 650 Ti Boost has 768 shading units, exactly double the GTX 675M’s 384 shading units.

Q: Do both GPUs support DirectX 12?

A: Yes, both support DirectX 12 (11_0) and OpenGL 4.6. The GTX 650 Ti Boost also supports Vulkan 1.2.175, while the GTX 675M has no recorded Vulkan support.

Q: What is the memory bandwidth difference?

A: The GTX 650 Ti Boost offers 144.2 GB/s over a 192-bit bus, while the GTX 675M offers 96.00 GB/s over a 256-bit bus. The GTX 650 Ti Boost leads by 50%.

Q: Which GPU has a higher pixel rate?

A: The GTX 650 Ti Boost has a pixel rate of 16.51 GPixel/s, compared to the GTX 675M’s 9.920 GPixel/s, a 66% advantage.

Q: How do their average benchmark scores compare?

A: The GTX 650 Ti Boost has an average benchmark score of 8067, while the GTX 675M averages 6946. The GTX 650 Ti Boost ranks at the 42nd percentile of all GPUs, the GTX 675M at the 39th.

Architecture Differences

The two GPUs come from different NVIDIA architectures and process nodes. The GTX 650 Ti Boost uses the GK106 chip on the Kepler architecture, built on a 28 nm process at TSMC. The GTX 675M uses the GF114 chip on the Fermi 2.0 architecture, built on a 40 nm process, also at TSMC. This process node difference is significant: 28 nm versus 40 nm allows the GTX 650 Ti Boost to pack more transistors into a smaller die.

The GTX 650 Ti Boost contains 2,540 million transistors on a 221 mm² die, giving a transistor density of 11.5 million per mm². The GTX 675M contains 1,950 million transistors on a much larger 332 mm² die, yielding a density of only 5.9 million per mm². The Kepler design is nearly twice as dense, which explains how it achieves higher performance with fewer ROPs and a narrower memory bus.

Core configuration differs sharply. The GTX 650 Ti Boost has 768 shading units, 64 TMUs, and 24 ROPs. The GTX 675M has 384 shading units, 64 TMUs, and 32 ROPs. The shading unit count is a 2x advantage for the GTX 650 Ti Boost, while the GTX 675M holds a 1.33x advantage in ROPs. Both have identical TMU counts at 64.

Clock behavior also differs. The GTX 650 Ti Boost has a base clock of 980 MHz and a boost clock of 1032 MHz. The GTX 675M has no base or boost clock recorded in the database; its memory clock is 750 MHz (3 Gbps effective), half the GTX 650 Ti Boost’s 1502 MHz (6 Gbps effective). The GTX 650 Ti Boost’s higher clocks and doubled shading units drive its FP32 advantage: 1.585 TFLOPS versus 952.3 GFLOPS.

Memory subsystems are configured differently. The GTX 650 Ti Boost uses 2 GB GDDR5 on a 192-bit bus, achieving 144.2 GB/s. The GTX 675M uses 2 GB GDDR5 on a 256-bit bus, achieving 96.00 GB/s. The GTX 675M’s wider bus partially compensates for its slower memory clock, but not enough to match the GTX 650 Ti Boost’s bandwidth.

Power and form factor differ substantially. The GTX 650 Ti Boost has a TDP of 134 W, is a dual-slot card, requires a single 6-pin power connector, and needs a 300 W suggested PSU. It measures 241 mm in length. The GTX 675M has a TDP of 100 W, comes as an MXM module, requires no power connectors, and has no suggested PSU or dimensions recorded. The GTX 675M’s bus interface is MXM-B (3.0), while the GTX 650 Ti Boost uses PCIe 3.0 x16.

Display outputs also separate the two. The GTX 650 Ti Boost offers 2x DVI, 1x HDMI 1.4a, and 1x DisplayPort 1.2. The GTX 675M’s display outputs are listed as "Portable Device Dependent," meaning they vary by laptop implementation. API support is nearly identical for DirectX and OpenGL, but the GTX 650 Ti Boost adds Vulkan 1.2.175 support, which the GTX 675M lacks entirely.

Release timing shows the GTX 675M came first, launching on 2012-03-21, while the GTX 650 Ti Boost followed on 2013-03-25. The GTX 675M’s predecessor is the GeForce 500M series and its successor is the GeForce 700M series. The GTX 650 Ti Boost’s predecessor is the GeForce 500 series and its successor is the GeForce 700 series. Both are end-of-life products now. The GTX 650 Ti Boost had a launch MSRP of 169 USD; no launch MSRP is recorded for the GTX 675M.