NVIDIA GeForce GTX 660M Mac Edition

The NVIDIA GeForce GTX 660M Mac Edition is a 28 nm Kepler-generation mobile GPU built by TSMC, with the GK107 chip at its core. It packs 1,270 million transistors onto a 118 mm² die, giving a transistor density of 10.8M / mm², and belongs to the GeForce 600M family. The product is marked as end-of-life in the fact pack and was released on March 31, 2013, with the GeForce 500M as its predecessor and GeForce 700M as its successor.

Benchmark Performance

The fact pack records no per-game benchmark scores for the GTX 660M Mac Edition; the benchmarks array is empty. That means the database has no FPS or synthetic test entries to compare directly against rival cards. The only relative metric supplied is percentileVsAllGpus, which sits at 50, placing this GPU at the midpoint of the database. The average benchmark score is 0, which in this case reflects the absence of populated benchmark records rather than a measured performance outcome. Because the nearestRivals list is empty, no deltaPct values can be reported.

The compute specification provides the clearest performance indicators. The GPU clock is fixed at 950 MHz for both base and boost, with no dynamic boost range listed. It contains 384 shading units, 32 texture mapping units, and 16 ROPs. Those resources produce 729.6 GFLOPS of FP32 throughput, 30.40 GTexel/s of texture fill rate, and 7.600 GPixel/s of pixel fill rate. The memory side runs at 1250 MHz, or 5 Gbps effective, across a 128-bit bus for 80.00 GB/s of bandwidth.

Those numbers describe a compact Kepler part aimed at mobile platforms. The FP32 figure of 729.6 GFLOPS is the headline compute measure, while the texture and pixel rates show how quickly the shading units can feed the 16 ROPs. Without rival scores, the data does not support a percentage comparison, but the 50th percentile position indicates a database-wide middle ranking. Any claim about precise deltas relative to other GPUs cannot be derived from this fact pack.

Who Should Consider It

This is an MXM Module GPU with display outputs described as portable-device dependent. That makes it a candidate for laptop or compact mobile systems using the MXM-B (3.0) interface, not a standalone desktop card. The 512 MB frame buffer is the dominant constraint for any user considering this part. At higher resolutions and with texture-heavy settings, a 512 MB GDDR5 buffer will be filled quickly. The 80.00 GB/s bandwidth and 128-bit bus are modest, so the memory subsystem will become the limiting factor before the 729.6 GFLOPS compute rate is fully exercised.

The target user is someone running lighter rendering loads or older games where the small VRAM pool is not a problem. Lower resolution and reduced texture detail will keep memory pressure manageable. The fixed 950 MHz clock and 384 shading units are enough for straightforward 3D work, but the data does not support recommendations for demanding high-resolution settings. Users who need large texture caches or high-resolution frame buffers should look elsewhere, because 512 MB is very small by current standards. For portable systems that can accommodate an MXM module and whose display outputs match the host laptop, this GPU can be a sensible option only within those modest settings.

Ray Tracing and Feature Set

The GTX 660M Mac Edition is based on the Kepler architecture and uses the GK107 chip. The fact pack lists no ray tracing cores and no tensor cores, so hardware ray tracing and tensor-accelerated features are not part of the package. This is a conventional raster-oriented GPU from the GeForce 600M generation.

API support in the fact pack includes DirectX 12 (11_0), OpenGL 4.6, and Vulkan 1.2.175. The DirectX 12 entry is specifically noted as feature level 11_0, which means it carries the DirectX 12 API label but with the feature set of an 11_0-class device. OpenGL 4.6 and Vulkan 1.2.175 give it modern API access for compatible software. The absence of RT and tensor cores means any ray tracing or AI workloads would need to fall back to general-purpose shader execution, but the fact pack does not provide performance data for that scenario.

FAQ

Q: What architecture does the GTX 660M Mac Edition use?

A: It uses the Kepler architecture with the GK107 chip, built by TSMC on a 28 nm process. It has 1,270 million transistors on a 118 mm² die with a density of 10.8M / mm².

Q: How much memory does it have?

A: It has 512 MB of GDDR5 memory on a 128-bit bus, running at 1250 MHz with 5 Gbps effective data rate and 80.00 GB/s bandwidth.

Q: Does it support hardware ray tracing?

A: No. The fact pack lists no ray tracing cores and no tensor cores for this GPU.

Q: What power connectors does it require?

A: The fact pack lists no power connectors. The GPU has a 50 W TDP, and no suggested PSU is recorded.

Q: What display outputs does it have?

A: Display outputs are listed as portable-device dependent, meaning they rely on the host portable system rather than being fixed outputs on the module.

Q: Is this GPU still in production?

A: No. The production status is end-of-life, and the release date is March 31, 2013, with the GeForce 500M as its predecessor and GeForce 700M as its successor.

Memory Subsystem

The memory subsystem consists of 512 MB of GDDR5 on a 128-bit bus, with a memory clock of 1250 MHz and an effective data rate of 5 Gbps. Total bandwidth is 80.00 GB/s. The combination of a small capacity and a narrow bus means this is not a memory-heavy part. For a 512 MB frame buffer, 80.00 GB/s is the available bandwidth envelope, and it will be the practical ceiling for transferring textures, geometry, and frame data at the same time.

At higher resolutions, the capacity limit of 512 MB becomes the more pressing issue. Even if the compute unit can generate pixels at 7.600 GPixel/s, the frame buffer must hold the color buffer, depth data, and textures. The 128-bit bus width is a further constraint because it ties the memory controller to a lower peak data path than wider-bus designs. In practice, users will need to keep resolution and texture quality low enough that the 512 MB pool is not exceeded. The 5 Gbps effective memory speed is standard for GDDR5, but the modest capacity and bus width ultimately limit high-resolution usability.

Power and Cooling

The GTX 660M Mac Edition is rated at 50 W TDP. This is a low-power part by design, consistent with mobile use. The module is listed as an MXM Module with an MXM-B (3.0) interface, and no power connectors are required. The fact pack also records no suggested PSU, so there is no power-supply recommendation to report.

Because there are no auxiliary power connectors, power delivery comes through the MXM connector itself. The slot width is described as MXM Module, which is a module form factor rather than a PCIe card width. Cooling is therefore dependent on the host portable device’s thermal solution. The fact pack does not list any cooler, fan, or heatsink details. The 50 W TDP gives system integrators a clear thermal budget, but actual cooling performance will vary by laptop design.

How It Compares

The fact pack contains no nearestRivals entries for the GTX 660M Mac Edition. There are no rival names, no rival scores, and no deltaPct figures to compare against. As a result, this section cannot report percentage deltas relative to competing GPUs. The only comparative data point available is the overall percentileVsAllGpus value of 50, which places the card at the middle of the database’s GPU rankings.

No nearest rival is listed, so there is no single competitor to benchmark against. The absence of rival data limits the analysis to absolute specifications and the database-level percentile. In that context, the GPU is best understood as a mid-ranked mobile part with 729.6 GFLOPS FP32 compute, 7.600 GPixel/s pixel fill, 30.40 GTexel/s texture fill, 512 MB GDDR5, 80.00 GB/s bandwidth, and a 50 W TDP. Those numbers define its position more concretely than any rival comparison, because no direct comparison data is present in the fact pack.