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NVIDIA GeForce RTX 5090 Spotted with Missing ROPs, Performance Loss Confirmed, Multiple Vendors Affected (techpowerup.com)

submitted 1 day ago by [email protected] to c/[email protected]

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Seems like so far, as far as anybody knows, only the Zotac "Solid" cards are affected.

First paragraph reads:

TechPowerUp has discovered that there are NVIDIA GeForce RTX 5090 graphics cards in retail circulation that come with too few render units, which lowers performance. Zotac's GeForce RTX 5090 Solid comes with fewer ROPs than it should—168 are enabled, instead of the 176 that are part of the RTX 5090 specifications. This loss of 8 ROPs has a small, but noticeable impact on performance. During recent testing, we noticed our Zotac RTX 5090 Solid sample underperformed slightly, falling behind even the NVIDIA RTX 5090 Founders Edition card. At the time we didn't pay attention to the ROP count that TechPowerUp GPU-Z was reporting, and instead spent time looking for other reasons, like clocks, power, cooling, etc.

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[–] [email protected] 7 points 1 day ago* (last edited 1 day ago)

Technically, the Raster Operations Pipeline is the entire process of actually rendering a frame, or, contextually and depending on what precise terminology is being used by what company for which architecture, it may only refer to the final stages of actually rendering the frame.

Raster Operations Pipeline is the process, the systematized flow of different stages of rendering, the verb or action that the physical Raster Output Processors actually perform. EDIT: Or perform a part of, a stage of.

In this case, the Raster Operations Pipeline is hampered by the GPU missing 8 out of 176 Raster Output Processors.

Ie, its missing an amount of discrete physical components from the GPU board, and thus is less performant at actually rendering the Raster Operations Pipeline.

Nvidia is ... pretty much very obviously at this point going out of its way to make the terminogy around its GPUs as confusing as possible, so that they can more easily do the equivalent of Star Trek esque technobabble to waive away and dismiss anyone who tries to actually dive in and understand what they're actually doing.