NVIDIA GeForce GTX 465 vs NVIDIA GeForce GTX 850M Comparison

The GeForce GTX 850M and GeForce GTX 465 land in nearly the same performance tier, separated by a razor-thin margin in aggregate benchmark scores. The data places the GTX 850M at an average score of 9302, while the GTX 465 sits at 9294, a difference of just 0.1% in favor of the mobile part. Both cards occupy the 46th percentile among all GPUs, meaning they deliver similar overall throughput, but the comparison is more interesting when you look at how they achieve it, their target platforms, and the specific tests where one pulls ahead.

Head-to-Head Benchmarks

The only direct benchmark comparison available is in Geekbench OpenCL, and the GTX 850M takes the win. It scores 9821 against the GTX 465’s 9294, a margin of 5.7% in favor of the newer Maxwell-based chip. This is a meaningful lead in raw compute workloads, especially given that the GTX 465 is a desktop card with a much larger die and higher power budget. The 5.7% gap suggests that the GTX 850M’s architecture is significantly more efficient at converting its resources into compute performance.

Outside of that single head-to-head, the broader benchmark picture shows near-parity. The GTX 850M also has a Geekbench Vulkan score of 8782, which the GTX 465 cannot match because it lacks Vulkan support in its API list. That is a structural advantage for the 850M, not just a performance one. In terms of average scores, the two are effectively tied, with the 850M at 9302 and the 465 at 9294. The nearest rival data reinforces this: the AMD Radeon R7 M380 scores 9313, just 0.1% above the 850M, while the GTX 960 scores 9273, 0.3% below it. The GTX 465 sits 0.2% below the R7 M380 and 0.2% above the GTX 960, placing both cards in the same cluster of mid-tier performers.

The practical takeaway is that in OpenCL compute, the GTX 850M is the clear winner by 5.7%, but in overall average performance, the two are statistically indistinguishable. If you are looking at raw compute throughput, the 850M has the edge. If you are looking at a broad average of synthetic workloads, the difference is negligible.

FAQ

Q: How much faster is the GTX 850M than the GTX 465 in OpenCL?

A: The GTX 850M scores 9821 in Geekbench OpenCL, while the GTX 465 scores 9294. That is a 5.7% advantage for the 850M.

Q: Which card has better API support?

A: The GTX 850M supports DirectX 12 (11_0), OpenGL 4.6, and Vulkan 1.4. The GTX 465 supports DirectX 12 (11_0) and OpenGL 4.6 but has no Vulkan support. This means the 850M is capable of running Vulkan workloads, while the 465 is not.

Q: Are these two cards comparable in overall performance?

A: Yes. The GTX 850M has an average benchmark score of 9302, and the GTX 465 has 9294. The delta is only 0.1%, placing both in the 46th percentile of all GPUs.

Q: What is the memory configuration difference?

A: The GTX 850M has 2 GB of DDR3 on a 128-bit bus with 32.03 GB/s bandwidth. The GTX 465 has 1 GB of GDDR5 on a 256-bit bus with 102.7 GB/s bandwidth. The 465 has over three times the memory bandwidth.

Q: Which card has higher transistor density?

A: The GTX 850M uses a 28 nm process and packs 1,870 million transistors into a 148 mm² die, giving a density of 12.6 million transistors per mm². The GTX 465 uses a 40 nm process with 3,100 million transistors on a 529 mm² die, yielding 5.9 million transistors per mm².

Q: Is the GTX 465 a desktop card?

A: Yes. It is a dual-slot card with a 241 mm length, requires 2x 6-pin power connectors, and has a suggested PSU of 550 W. The GTX 850M is an IGP (integrated graphics processor) for laptops with no power connectors and a 45 W TDP.

Architecture Differences

The two GPUs come from entirely different architectural generations. The GTX 850M is built on the Maxwell architecture with the GM107 chip, fabricated on a 28 nm process at TSMC. It packs 1,870 million transistors into a 148 mm² die, resulting in a transistor density of 12.6 million per mm². The GTX 465 is based on the older Fermi architecture with the GF100 chip, using a 40 nm process. It contains 3,100 million transistors on a much larger 529 mm² die, with a density of only 5.9 million per mm².

The shader configuration differs significantly. The GTX 850M has 640 shading units, 40 texture mapping units (TMUs), and 16 raster output units (ROPs). The GTX 465 has 352 shading units, 44 TMUs, and 32 ROPs. Despite having fewer shaders, the GTX 465 maintains higher TMU and ROP counts, which helps it in fill-rate-bound scenarios. The pixel rate for the 850M is 14.43 GPixel/s versus 13.38 GPixel/s for the 465, and the texture rate is 36.08 GTexel/s versus 26.75 GTexel/s. The 850M wins both rates despite its smaller memory bus.

Memory architecture is a major divergence. The GTX 850M uses 2 GB of DDR3 on a 128-bit bus, yielding 32.03 GB/s of bandwidth. The GTX 465 uses 1 GB of GDDR5 on a 256-bit bus, delivering 102.7 GB/s. That is a stark difference: the 465 has 3.2 times the memory bandwidth. The 850M compensates with a smaller, more efficient core and a much lower power draw.

The GTX 850M has a TDP of 45 W, while the GTX 465 is rated at 200 W. The 850M is an IGP with no power connectors, while the 465 requires 2x 6-pin connectors and a 550 W PSU. The bus interface also differs: the 850M uses PCIe 3.0 x16, while the 465 uses PCIe 2.0 x16. In terms of API support, the 850M adds Vulkan 1.4, which the 465 lacks entirely.

The Verdict

The data points to a clear split based on use case. If you need compute performance in a mobile form factor, the GTX 850M is the better part. It wins the only head-to-head benchmark by 5.7%, has Vulkan support, and does so at a fraction of the power draw. The 45 W TDP versus 200 W is not just a spec sheet difference; it represents the fundamental design goal of each card. The GTX 850M is built for laptops, where efficiency matters more than raw bandwidth.

If you are working with a desktop and need memory bandwidth, the GTX 465 has a massive advantage. Its 102.7 GB/s bandwidth is more than three times the 850M’s 32.03 GB/s. This matters for high-resolution textures and memory-heavy workloads that are not captured by the Geekbench OpenCL test. The 465 also has double the ROPs (32 versus 16), which can benefit certain rasterization tasks.

Neither card is a clear winner across the board. The average benchmark scores are within 0.1% of each other, meaning synthetic workloads will perform nearly identically. The GTX 850M is the more modern part with better architecture efficiency and API support, while the GTX 465 is an older desktop card that leverages its larger memory bus and higher power budget to match it. Choose the 850M for laptops and modern API compatibility; choose the 465 if you have a desktop and need bandwidth.

Specification Differences

| Specification | NVIDIA GeForce GTX 850M | NVIDIA GeForce GTX 465 |

|---|---|---|

| Chip | GM107 | GF100 |

| Architecture | Maxwell | Fermi |

| Generation | GeForce 800M | GeForce 400 |

| Process Node | 28 nm | 40 nm |

| Transistors | 1,870 million | 3,100 million |

| Die Size | 148 mm² | 529 mm² |

| Transistor Density | 12.6M / mm² | 5.9M / mm² |

| Memory Size | 2 GB | 1024 MB |

| Memory Type | DDR3 | GDDR5 |

| Memory Bus Width | 128 bit | 256 bit |

| Memory Bandwidth | 32.03 GB/s | 102.7 GB/s |

| Shading Units | 640 | 352 |

| TMUs | 40 | 44 |

| ROPs | 16 | 32 |

| Pixel Rate | 14.43 GPixel/s | 13.38 GPixel/s |

| Texture Rate | 36.08 GTexel/s | 26.75 GTexel/s |

| FP32 | 1,154.6 GFLOPS | 855.4 GFLOPS |

| TDP | 45 W | 200 W |

| Slot Width | IGP | Dual-slot |

| Power Connectors | None | 2x 6-pin |

| Suggested PSU | None | 550 W |

| Bus Interface | PCIe 3.0 x16 | PCIe 2.0 x16 |

| Vulkan | 1.4 | None |

| Release Date | 2014-03-11 | 2010-05-30 |

Where Each One Wins

The GTX 850M wins in compute throughput and modern feature support. Its FP32 performance is 1,154.6 GFLOPS versus 855.4 GFLOPS for the GTX 465, a 35% advantage. It also has higher pixel and texture rates, 14.43 GPixel/s and 36.08 GTexel/s respectively, compared to 13.38 GPixel/s and 26.75 GTexel/s. The 850M offers Vulkan support, which the 465 lacks, and it does all of this at 45 W. It is the clear choice for mobile workloads, OpenCL compute, and any application that can use Vulkan.

The GTX 465 wins in memory bandwidth and raw memory capacity per bus width. With 102.7 GB/s of bandwidth on a 256-bit bus, it has 3.2 times the bandwidth of the 850M. It also has double the ROP count (32 versus 16), which can improve performance in pixel-heavy scenes. The 465 is a desktop card with a 241 mm length and dual-slot cooler, so it fits into standard desktop cases with a 550 W PSU. It is the better option for scenarios where memory bandwidth is the bottleneck, such as high-resolution texture streaming or certain compute tasks that are bandwidth-limited.

In terms of raw average performance, neither card wins. The 850M scores 9302 and the 465 scores 9294, a 0.1% difference that is within noise. The GTX 850M edges ahead in the only direct head-to-head test, but the GTX 465 remains competitive due to its memory subsystem. Ultimately, the 850M is the more efficient and feature-complete part, while the 465 is a bandwidth-heavy desktop alternative for users who need that specific strength.