Skip to main content

Testing shows Nvidia’s new video cards still go nuts with multiple high-refresh monitors

nvidia drivers monitors gtx 1080 kv 1462594232 900x600
Nvidia
There may be something fishy going on with Nvidia’s drivers that is causing the company’s new GeForce GTX 1000 Series “Pascal” graphics chips to run at a higher idle clock speed than what the Windows desktop requires. While this issue won’t trigger the apocalypse, this “bug” means a hotter desktop and more overall larger power draw.

The problem, it seems, only happens when multiple displays set to a refresh rate of over 60Hz are connected to the DisplayPort output jacks on the GeForce cards. This problem actually reared its head at the beginning of the year, and was confirmed to exist in a test using Nvidia’s 364.47 driver set, a GeForce GTX 980 Ti card, and two monitors set above 60Hz. The result was that once the second monitor was added, the idle clock speed rose from 135Mhz to 925MHz, and then fell again when the second monitor was disconnected.

Recommended Videos

In a second test conducted this week by The Tech Report, the weird monitor bug still seems to exist. For this latest test, a Gigabyte GeForce GTX 1080 Xtreme Gaming card was inserted into a test bed and its associated Xtreme Gaming Engine software installed. The test also included the Eizo Foris FS2735 FreeSync display with a 144Hz refresh rate, and the Asus ROG Swift PG2790 G-Sync display with a 165Hz refresh rate. Both were connected to the card’s DisplayPort output jacks.

Get your weekly teardown of the tech behind PC gaming
Check your inbox!

At first, only the Asus monitor was connected in order to make sure the GTX 1080 card’s idle speed remained at 291MHz when the monitor was switched between 60Hz and 165Hz. The overall power draw from the system was even 65 watts to 75 watts.

However, once the monitor was set at 165Hz and the second Eizo monitor running at 60Hz was connected, the card’s idle clock speed jumped up to 1,304MHz. The system power consumption jumped up to an average of 107 watts as well.

The test also showed that changing the refresh rate of the second monitor had no effect on the card’s idle clock speed. The Eizo panel was cranked up to 144Hz and then back to 60Hz, but the change did not increase or decrease the clock speed or the power consumption of the GTX 1080 graphics card. Instead, the Asus monitor, still connected, was changed from 165Hz down to 60Hz, and suddenly the graphics card eased back down to an idle speed of 291MHz. Disabling the G-Sync feature on the Asus monitor had no effect on the idle clock speed.

Unfortunately, customers with two displays attached and running at high refresh rates may have to pay a higher electric bill until the issue is addressed in Nvidia’s drivers. That said, customers might want to keep them running at 60Hz each until Nvidia fixes the weird issue.

Kevin Parrish
Former Digital Trends Contributor
Kevin started taking PCs apart in the 90s when Quake was on the way and his PC lacked the required components. Since then…
NASA tests new AI chatbot to make sense of complex data
An Earth image captured by NASA.

Using its Earth-observing satellites, NASA has collected huge amounts of highly complex data about our planet over the years to track climate change, monitor wildfires, and plenty more besides.

But making sense of it all, and bringing it to the masses, is a challenging endeavor. Until now, that is.

Read more
Corsair just spilled the beans on next-gen GPU requirements
Nvidia GeForce RTX 4090 is shown along with a hand holding the power cable adapter.

Sometimes, news about next-gen GPUs comes from unlikely sources -- today is one of those days. Corsair just spoke about its power supply units (PSUs) and cooling solutions in relation to the future of some of the upcoming best graphics cards. It turns out that Nvidia's RTX 50-series may not be that much more power-hungry than the current-gen cards, but there's more than just Nvidia to consider here.

Although unexpected, Corsair's statement sounds like good news. The company doesn't talk about any new solutions. In fact, Corsair seems to confirm that the power supply units (PSUs) we use today will still work fine for next-gen cards -- provided the wattage is sufficient.

Read more
Apple hid one of the best features of the M4 MacBook Pro
Someone using a MacBook Pro M4.

Apple's new M4 MacBook Pro is great. It earned a rare Editors' Choice badge in our M4 MacBook Pro review, and it's cemented itself as one of the best laptops you can buy. Even with so much going for it, Apple hid one of the most exciting developments it made with its new range of laptops -- the use of quantum dot technology.

Like the last few generations of MacBook Pro displays, the M4 range is using a mini-LED backlight. There's no tandem OLED like we saw on the iPad Pro earlier this year. However, according to Ross Young, CEO of Display Supply Chain Consultants (DSCC), Apple added a layer of quantum dots to the M4 MacBook Pro. This, according to the display expert, offers better color gamut and motion performance compared to the solution Apple previously used.

Read more