RTX 5090 Hits 700 W, RTX 5080 Reaches 680 W Via mVolt+ Software Alone

A Software Unlock Nobody Asked NVIDIA About

Somebody in the overclocking community just found a way to feed NVIDIA’s flagship GPUs an alarming amount of electricity, and they did it without touching a soldering iron. As reported by TechPowerUp, the v0.36 update to the GPU tuning tool mVolt+ introduced power and voltage management features that can push RTX 50-series cards well beyond their factory power limits, no shunt mod required, no custom vBIOS required.

The results are genuinely wild. A Reddit user going by u/SyncFail_ on r/Overclocking claims their GeForce RTX 5090 hit a total system power draw of 700 W during a 3DMark Steel Nomad run, netting 16,523 points in the process. That is 125 W above the card’s stock 575 W TDP. The GPU itself reached 3,127 MHz, a full 720 MHz beyond the reference design’s 2,407 MHz boost clock, according to screenshots the user shared.

For context, 720 MHz of extra headroom is not a subtle bump. That is the kind of frequency gap that used to require exotic liquid nitrogen setups and a lot of crossed fingers.

The RTX 5080 Gets Its Own Extreme Makeover

Meanwhile, as reported by VideoCardz and relayed by TechPowerUp, a separate user put an ASUS ROG Astral GeForce RTX 5080 OC through a similar treatment. That card drew 680 W total under FurMark’s burn test, up from a stock TDP of 400 W. NVIDIA does allow the 5080 to be pushed to 450 W through an official tool, but 680 W is a significant leap past even that sanctioned ceiling.

With the extra power flowing, the ROG Astral hit 3,390 MHz in FurMark. Its standard boost, without any overclock applied, sits at 2,760 MHz. The user specifically noted that no shunt modification was involved.

The ASUS ROG Astral is already one of the beefier 5080 designs on the market, built to handle aggressive power targets. Whether it was built to handle this particular power target is a different question.

The Cable Is Already Nervous

Here is where things get uncomfortable. Community reaction to both results has included pointed concerns about the 12v-2x6 power connector, and those concerns are not unfounded. TechPowerUp notes that the connector has already shown problems staying intact at stock clock speeds and stock power draw. Feeding these cards 680 W or 700 W turns a connector that was already on thin ice into something genuinely worrying.

Fire hazard commentary in the thread was, predictably, not hard to find. One commenter on TechPowerUp’s own article quipped about “GeForce Melts” as a gourmet experience, which is darkly funny until you remember people have actual expensive hardware and homes at stake.

None of this is to say the mVolt+ technique is without legitimate technical interest. Bypassing power limits through software rather than hardware modification is a meaningful development for the overclocking community, and the performance numbers being reported are genuinely impressive. But the 12v-2x6 connector’s track record gives the whole endeavor a sharper edge than typical enthusiast tinkering usually carries.

Anyone eyeing these results and thinking about replicating them should weigh the benchmark scores against the connector situation carefully. A 720 MHz overclock looks great in a screenshot. A melted cable looks considerably worse.