AMD Radeon R9 M375X vs NVIDIA GeForce GTX 465 Comparison

Head-to-Head Benchmarks

The recorded data shows a single direct benchmark comparison between these two cards, and it clearly favors the older NVIDIA part. In the Geekbench OpenCL test, the NVIDIA GeForce GTX 465 scores 9294 points against 8273 for the AMD Radeon R9 M375X. This gives the GTX 465 a 12.3% performance advantage, a substantial margin for any single benchmark.

Looking at the broader database context, the GTX 465 sits at the 46th percentile among all GPUs, with an average benchmark score of 9294. Its nearest rivals are tightly clustered: the NVIDIA GeForce GTX 850M scores 9302 (0.1% ahead), the AMD Radeon R7 M380 scores 9313 (0.2% ahead), and the NVIDIA GeForce GTX 960 scores 9273 (0.2% behind). The AMD Radeon Vega 8 trails at 9221, 0.8% behind the GTX 465. This clustering suggests the GTX 465 is positioned in a dense performance tier where small differences separate many cards.

The AMD Radeon R9 M375X, by contrast, holds the 43rd percentile among all GPUs, with an average benchmark score of 8325 across its two recorded tests (OpenCL and Vulkan). Its nearest rivals are the NVIDIA Quadro K1200 at 8265 (0.7% behind), the NVIDIA GeForce GTX 675MX at 8427 (1.2% ahead), the AMD Radeon 880M at 8436 (1.3% ahead), and the NVIDIA GeForce MX330 at 8458 (1.6% ahead). The R9 M375X's position in this group is lower than the GTX 465's, and the 12.3% delta between the two cards is far larger than any gap within their respective rival clusters.

Notably, the R9 M375X does have a Vulkan score of 8377, which is higher than its OpenCL score of 8273, indicating some API-specific strength. However, the GTX 465 has no recorded Vulkan score, so a direct comparison on that API cannot be made from the data. In the only head-to-head test available, the GTX 465 wins decisively, and its percentile ranking confirms this is not a fluke: a 46th percentile card beating a 43rd percentile card by over 12% is consistent with the overall database averages.

Architecture Differences

The two GPUs come from fundamentally different design eras and philosophies. The NVIDIA GeForce GTX 465 uses the GF100 chip built on the Fermi architecture, part of the GeForce 400 generation. It is manufactured on a 40 nm process at TSMC, with a massive 3,100 million transistors packed into a 529 mm² die. This yields a transistor density of 5.9 million transistors per square millimeter, a low figure by modern standards due to the large, power-hungry design.

The AMD Radeon R9 M375X uses the Tropo chip based on GCN 1.0 architecture, part of the Gem System (R9 M300) generation. It is built on a more modern 28 nm process, also at TSMC, with 1,500 million transistors on a much smaller 123 mm² die. The transistor density here is 12.2 million per square millimeter, more than double the GTX 465's density, reflecting the process improvement and more compact design philosophy.

Memory configurations differ significantly. The GTX 465 comes with 1024 MB of GDDR5 on a 256-bit bus, delivering 102.7 GB/s of bandwidth. The R9 M375X offers 2 GB of GDDR5 on a 128-bit bus, which yields only 72.00 GB/s of bandwidth. Despite having twice the capacity, the AMD card has about 30% less bandwidth, which can matter in memory-intensive workloads.

The compute resources tell a contrasting story. The GTX 465 has 352 shading units, 44 texture mapping units, and 32 ROPs. The R9 M375X has 640 shading units, 40 TMUs, and only 16 ROPs. The AMD card has 82% more shading units but fewer TMUs and half the ROPs. In raw throughput, the R9 M375X achieves 1,299.2 GFLOPS of FP32 compute versus 855.4 GFLOPS for the GTX 465, a 52% advantage for AMD. The R9 M375X also leads in pixel rate (16.24 GPixel/s vs 13.38 GPixel/s) and texture rate (40.60 GTexel/s vs 26.75 GTexel/s), despite its narrower memory bus.

Clock behavior also differs. The GTX 465 has no recorded base or boost clock, only a memory clock of 802 MHz (3.2 Gbps effective). The R9 M375X has a base clock of 925 MHz and a boost clock of 1015 MHz, with memory at 1125 MHz (4.5 Gbps effective). The AMD card can dynamically raise its core clock, while the NVIDIA card's clock profile is not documented in the database.

API support shows a generational gap. The GTX 465 supports DirectX 12 (11_0) and OpenGL 4.6, with no Vulkan support recorded. The R9 M375X supports DirectX 12 (11_1), OpenGL 4.6, and Vulkan 1.2.170, making it more complete for modern API usage. The GTX 465 connects via PCIe 2.0 x16, while the R9 M375X uses PCIe 3.0 x16, doubling the interface bandwidth.

Physical and power characteristics are only partially documented. The GTX 465 is a dual-slot card, 241 mm (9.5 inches) long, with a 200 W TDP, two 6-pin power connectors, and a suggested 550 W power supply. It displays outputs via 2x DVI and 1x mini-HDMI 1.3a. The R9 M375X has no recorded TDP, slot width, power connectors, suggested PSU, dimensions, or display outputs, indicating it may be a mobile or OEM part without standardized specifications.

FAQ

Q: Which GPU is faster in the only directly recorded benchmark?

A: The NVIDIA GeForce GTX 465 wins the Geekbench OpenCL test with a score of 9294 versus 8273 for the AMD Radeon R9 M375X, a 12.3% advantage.

Q: Does the AMD card have any performance advantage in raw compute?

A: Yes, the R9 M375X has higher FP32 throughput at 1,299.2 GFLOPS compared to 855.4 GFLOPS for the GTX 465, a 52% lead. It also has higher pixel and texture rates.

Q: How much memory does each card have, and what is the bandwidth?

A: The GTX 465 has 1024 MB of GDDR5 on a 256-bit bus with 102.7 GB/s bandwidth. The R9 M375X has 2 GB of GDDR5 on a 128-bit bus with 72.00 GB/s bandwidth.

Q: Which card supports Vulkan?

A: Only the AMD Radeon R9 M375X has Vulkan support, specifically version 1.2.170. The NVIDIA GeForce GTX 465 has no recorded Vulkan support.

Q: How do the two cards rank among all GPUs in the database?

A: The GTX 465 sits at the 46th percentile with an average score of 9294, while the R9 M375X sits at the 43rd percentile with an average score of 8325.

Q: What are the transistor and die size differences?

A: The GTX 465 has 3,100 million transistors on a 529 mm² die (40 nm), while the R9 M375X has 1,500 million transistors on a 123 mm² die (28 nm). The R9 M375X has more than double the transistor density.

Specification Differences

The two cards differ on nearly every recorded specification. The GTX 465 uses the GF100 chip on Fermi architecture from the GeForce 400 generation, while the R9 M375X uses Tropo on GCN 1.0 from the Gem System (R9 M300) generation. Process nodes are 40 nm versus 28 nm, both at TSMC. Transistor counts are 3,100 million versus 1,500 million, and die sizes are 529 mm² versus 123 mm², leading to transistor densities of 5.9M per mm² versus 12.2M per mm².

Clock specifications diverge: the GTX 465 has no base or boost clock recorded, with a memory clock of 802 MHz (3.2 Gbps effective). The R9 M375X has a 925 MHz base and 1015 MHz boost, with memory at 1125 MHz (4.5 Gbps effective). Memory size is 1024 MB versus 2 GB, bus width is 256-bit versus 128-bit, and bandwidth is 102.7 GB/s versus 72.00 GB/s.

Compute resources: shading units are 352 versus 640, TMUs are 44 versus 40, and ROPs are 32 versus 16. Pixel rates are 13.38 GPixel/s versus 16.24 GPixel/s, texture rates are 26.75 GTexel/s versus 40.60 GTexel/s, and FP32 throughput is 855.4 GFLOPS versus 1,299.2 GFLOPS.

The TDP is 200 W for the GTX 465, with no TDP recorded for the R9 M375X. The GTX 465 is dual-slot with 2x 6-pin power connectors and a 550 W suggested PSU; the R9 M375X has none of these recorded. Bus interfaces are PCIe 2.0 x16 versus PCIe 3.0 x16. Display outputs are 2x DVI and 1x mini-HDMI 1.3a for the GTX 465, with none recorded for the R9 M375X.

API support: DirectX 12 (11_0) versus DirectX 12 (11_1), both OpenGL 4.6, and Vulkan absent versus 1.2.170. The GTX 465 has a recorded length of 241 mm (9.5 inches); the R9 M375X has no dimensions. Release dates are May 30, 2010 for the GTX 465 and May 4, 2015 for the R9 M375X. The GTX 465 has a launch MSRP of 279 USD, while the R9 M375X has no launch MSRP recorded. Production status is end-of-life for both.

The Verdict

The data presents a clear but nuanced picture. In the only head-to-head benchmark, the NVIDIA GeForce GTX 465 beats the AMD Radeon R9 M375X by 12.3%, and its overall percentile ranking (46th vs 43rd) supports this result. Anyone prioritizing the recorded OpenCL performance should choose the GTX 465.

However, the R9 M375X has structural advantages that matter in different contexts. Its 52% higher FP32 throughput, higher pixel and texture rates, double the memory capacity, and Vulkan support make it more capable for modern compute workloads and newer APIs. The GTX 465's higher memory bandwidth (102.7 GB/s vs 72.00 GB/s) and wider 256-bit bus are its counterpoints, but these do not overcome the AMD card's raw compute lead in the specification sheet.

The GTX 465 is a desktop card with known power requirements (200 W TDP, dual-slot, 550 W PSU suggestion), a 279 USD launch MSRP, and physical dimensions. The R9 M375X has no recorded power, size, or price data, suggesting it may be an OEM or mobile part with different design constraints. The R9 M375X is also five years newer in release date and uses a more efficient 28 nm process with double the transistor density.

For users who rely on the specific OpenCL benchmark, the GTX 465 is the better performer. For users who need Vulkan support, more memory, or higher raw compute throughput, the R9 M375X is the better fit. The data does not support a universal recommendation; the choice depends on the workload and API requirements. The GTX 465 wins the direct comparison, but the R9 M375X wins on architectural modernity and compute density.