NVIDIA GeForce GTX 650 Ti vs NVIDIA GeForce GTX 880M Comparison

The NVIDIA GeForce GTX 650 Ti and the NVIDIA GeForce GTX 880M are both Kepler-based parts, but they target very different corners of the market: one is a desktop card from 2012, the other a mobile flagship from 2014. Despite this, their average benchmark scores are nearly identical, making them fascinating rivals. The GTX 650 Ti averages 8053 points, while the GTX 880M sits at 8040, a difference of just 0.2%. This statistical tie is remarkable given their divergent hardware, and the data suggests that raw specifications are not the sole determinant of real-world performance.

Head-to-Head Benchmarks

The only direct head-to-head benchmark available is Geekbench OpenCL, and it produces a decisive result. The GTX 650 Ti scores 7877, while the GTX 880M scores 5622. This gives the desktop card a 40.1% lead, a substantial margin that reverses the expectations set by their average scores. It is importantly the GTX 650 Ti’s win pushes its average score up, while the GTX 880M’s OpenCL result drags its average down, yet they still end up within 0.2% of each other overall. This implies the GTX 880M must perform significantly better in other untested workloads to compensate, or that the OpenCL test itself is heavily skewed toward desktop-oriented architectures.

The 40.1% delta in OpenCL is the biggest single win in this matchup. It suggests that in compute-heavy general-purpose tasks, the GTX 650 Ti is the clear choice. However, the absence of a Vulkan or Metal head-to-head test leaves a gap in the data. The GTX 880M does have a Geekbench Metal score of 10458, but the GTX 650 Ti has no Metal result, so a direct comparison there is impossible. Similarly, the GTX 650 Ti has a Geekbench Vulkan score of 8229, but the GTX 880M lacks a Vulkan entry. These missing data points mean the OpenCL result, while impressive, may not tell the whole story about gaming or modern API performance.

FAQ

Q: Which GPU has the higher average benchmark score?

A: The NVIDIA GeForce GTX 650 Ti has an average score of 8053, which is 0.2% higher than the GTX 880M’s 8040. This difference is negligible and places both cards in the 42nd percentile of all GPUs.

Q: How large is the GTX 650 Ti’s lead in OpenCL performance?

A: The GTX 650 Ti scores 7877 in Geekbench OpenCL, compared to the GTX 880M’s 5622. This represents a 40.1% advantage for the desktop card, the only head-to-head benchmark available.

Q: Does the GTX 880M offer any benchmark wins over the GTX 650 Ti?

A: No. In the single direct comparison (Geekbench OpenCL), the GTX 650 Ti wins. The GTX 880M has a separate Metal score of 10458, but the GTX 650 Ti has no Metal result, so no direct comparison can be made.

Q: Are these two GPUs considered close competitors?

A: Yes. They are listed as nearest rivals to each other, with the GTX 650 Ti’s average score being 0.2% higher than the GTX 880M’s. The GTX 880M’s average is also within 0.2% of the GTX 650 Ti’s score.

Q: What are the closest other rivals to these cards?

A: For the GTX 650 Ti, the NVIDIA GeForce GTX 650 Ti Boost scores 8067 (0.2% higher), and the NVIDIA GRID K2 scores 8080 (0.3% higher). For the GTX 880M, the NVIDIA Quadro P5000 scores 8039 (0.0% difference), and the GRID K2 is 0.5% higher.

Q: Which card has a higher transistor density?

A: The GTX 880M has a density of 12.0M transistors per mm², while the GTX 650 Ti has 11.5M / mm². This is a small difference that reflects the GTX 880M’s larger, more complex chip.

The Verdict

The data points to a clear, if counterintuitive, verdict. For compute workloads measured by OpenCL, the GTX 650 Ti is the definitive winner, outperforming the GTX 880M by 40.1%. This makes it the better choice for users prioritizing general-purpose compute or legacy API performance on a desktop platform. The GTX 650 Ti also has the edge in average score, albeit by a razor-thin 0.2%, but that margin is almost meaningless in real-world terms.

However, the GTX 880M is not without merit. Its 8 GB of memory and higher clock speeds suggest it is designed for a different purpose—mobile gaming and high-resolution texture loads. The lack of a Vulkan benchmark for the GTX 880M and the lack of a Metal benchmark for the GTX 650 Ti means the modern API picture is incomplete. In the end, the GTX 650 Ti earns the performance crown based on the available data, but the GTX 880M’s strengths lie in areas that are not fully captured by these specific tests. Users with a desktop should pick the GTX 650 Ti; those needing a mobile solution with large memory capacity would have no alternative but the GTX 880M.

Specification Differences

The two cards differ dramatically in almost every measurable specification. The GTX 650 Ti uses a 1024 MB memory buffer, while the GTX 880M has 8 GB, a factor of eight difference. The memory bus width also diverges: the GTX 650 Ti has a 128-bit interface, whereas the GTX 880M has a 256-bit bus. This leads to a bandwidth gap, with the GTX 880M delivering 160.0 GB/s compared to the GTX 650 Ti’s 86.40 GB/s.

The memory clocks differ slightly, with the GTX 650 Ti running at 1350 MHz (5.4 Gbps effective) and the GTX 880M at 1250 MHz (5 Gbps effective). The GTX 880M also has explicit base and boost clocks of 954 MHz and 993 MHz, respectively, while the GTX 650 Ti has no listed base or boost clock. The shading units, TMUs, and ROPs all favor the GTX 880M: 1536 shading units, 128 TMUs, and 32 ROPs versus the GTX 650 Ti’s 768, 64, and 16. This results in higher pixel and texture rates for the GTX 880M (31.78 GPixel/s and 127.1 GTexel/s) versus the GTX 650 Ti (14.85 GPixel/s and 59.39 GTexel/s). The FP32 compute is also higher on the GTX 880M at 3.050 TFLOPS versus 1,425.4 GFLOPS. Power and form factor differ as well: the GTX 650 Ti has a 110 W TDP, requires a 1x 6-pin connector, and is a single-slot PCIe 3.0 x16 card, while the GTX 880M has a 122 W TDP, no power connectors, and uses an MXM Module with an MXM-B (3.0) interface.

Architecture Differences

Both GPUs are built on NVIDIA’s Kepler architecture, but they use different chips. The GTX 650 Ti is based on the GK106S chip, while the GTX 880M uses the GK104. Both are manufactured by TSMC on a 28 nm process, but the die sizes and transistor counts differ substantially. The GTX 880M’s GK104 has 3,540 million transistors on a 294 mm² die, whereas the GTX 650 Ti’s GK106S has 2,540 million transistors on a 221 mm² die. The GTX 880M’s higher transistor density (12.0M / mm² vs 11.5M / mm²) indicates a more tightly packed design.

The generation names reflect their markets: the GTX 650 Ti belongs to the GeForce 600 series, while the GTX 880M is part of the GeForce 800M series. Their release dates are also different, with the GTX 650 Ti launching on 2012-10-08 and the GTX 880M on 2014-03-11. Both support DirectX 12 (11_0), OpenGL 4.6, and Vulkan 1.2.175, meaning their API feature sets are identical. The GTX 650 Ti has display outputs of 2x DVI and 1x mini-HDMI 1.4a, while the GTX 880M is described as "Portable Device Dependent," reflecting its mobile nature. Both have a predecessor and successor: the GTX 650 Ti follows the GeForce 500 series and precedes the GeForce 700, while the GTX 880M follows GeForce 700M and precedes GeForce 900M.

Where Each One Wins

The GTX 650 Ti wins in the only direct benchmark comparison, the Geekbench OpenCL test, with a 40.1% lead. This makes it the preferred option for compute-heavy tasks that leverage OpenCL, such as certain scientific simulations, video encoding, or other general-purpose GPU workloads. Its desktop form factor also means it can be installed in a standard PC, and its single-slot design with a single 6-pin connector makes it relatively easy to integrate into a system with a 300 W suggested PSU. It also has a higher OpenCL score than the GTX 880M, which is the primary metric where they can be directly compared.

The GTX 880M wins in terms of raw hardware specifications. It has 8 GB of memory, which is eight times more than the GTX 650 Ti, making it far more suitable for high-resolution textures or large datasets that exceed 1 GB. Its 256-bit memory bus and 160.0 GB/s bandwidth provide significantly higher memory throughput, which could benefit memory-bound workloads. It also has double the shading units, TMUs, and ROPs, leading to higher theoretical pixel, texture, and FP32 rates. The GTX 880M also has a Metal benchmark score of 10458, suggesting strong performance in Apple’s Metal API, though the GTX 650 Ti has no comparable score. In a mobile context, the GTX 880M has no direct competitor here, as its MXM form factor is designed for laptops. The data suggests the GTX 880M is the winner for memory capacity and modern mobile use cases, while the GTX 650 Ti is the winner for OpenCL compute and desktop integration.