The Best 2K Monitor for Gaming This Week

On a gaming monitor box, "2K" means 1440p: a panel 1,440 pixels tall, almost always 2560x1440, which retailers also sell as QHD or WQHD. You will see the term on Best Buy listings and in deal roundups. It decides two things at once: how sharp a 27-inch screen looks, and how hard your graphics card has to work to fill it.

This month it settled a third question. A 1440p 240Hz OLED is no longer a premium purchase. Best Buy sold the AOC Q27G41ZDF for $300 during the October 6 to 7 Prime Big Deals window, PCWorld reported. On October 23, Tom's Hardware flagged the Acer Predator XB27OU QD-OLED at $329.99 there, down from $379.99. If you want the short answer to "best 2K monitor for gaming", it is one of those two panels. The rest of this piece explains why, and which card you need to drive it.

The name rounds generously. A 2560-pixel-wide panel isn't 2,000 of anything, and the label actually follows the 1,440-line height, not the width. So Best Buy's own Best 1440p Gaming Monitor page lists 34-inch 3440x1440 ultrawides, like the AGEX AG34P at $249.99, right next to 27-inch 2560x1440 panels. It's also how ViewSonic can call a 34-inch QHD monitor the VX3418-2K. The height in pixels is the same, but the width and the load on the GPU are not.

That load is the part the label leaves out. Going from 1080p to 1440p is where a mid-range card runs out of spare frames. In Tom's Hardware's GPU hierarchy (June 24, 2026), the GeForce RTX 5070 ran Cyberpunk 2077 at Ultra at 119 fps at 1080p and 69.3 fps at 1440p. That is the same card on the same settings losing about 42% of its frames.

Refresh rate is a ceiling, not a frame rate. A 240Hz panel shows 240 frames a second only when the card renders that many. The 0.03ms response time printed on these OLEDs is a vendor spec for pixel transitions. None of the sources here measured it in a lab, so read it as a claim, not a result.

The $300 floor. The AOC Q27G41ZDF is a 27-inch 2560x1440 240Hz OLED with one HDMI and one DisplayPort input, a headphone jack and a VESA mount. A Slickdeals listing had it at $379.99 at Best Buy in February 2026, and Slickdeals threads tracked the same AOC QD-OLED line between roughly $300 and $380 through the year. PCWorld's Michael Crider called the October price "about the lowest I've ever seen for a new, not-refurbished OLED gaming monitor." He also noted that some US stores were running low on stock. Best Buy's price beat Amazon's listing for the same panel, which is sold there under the model name Q27GAZD. Check the price on Amazon if Best Buy is out of stock.

The $330 fallback. The Acer Predator XB27OU is another 27-inch 240Hz QD-OLED, and it was $329.99 at Best Buy as of October 23. We covered that deal when Acer's QD-OLED hit $329.99.

The $500 tier. On October 22, SammyGuru reported the Samsung Odyssey OLED G6 (27-inch, 240Hz, glare-free coating, FreeSync Premium) at $496.99 at Best Buy, down from $599.99. On October 14, Tom's Guide listed the ASUS ROG Strix 27-inch 2K OLED at $499.99, down from $649.99. That roundup didn't give its refresh rate. In late October, Best Buy's 1440p page had the MSI MAG 272QPW, a 27-inch 280Hz QD-OLED, at $529.99.

If you don't need OLED, the same Best Buy page had the Alienware AW2725DM (27-inch, 180Hz IPS) at $215.99, down from $269.99, during a Tech Fest sale that its banner said ends Sunday.

"2K" is also the name of a cinema projection format. Monitor makers borrowed the name, not the spec, and none of the monitors in this week's listings is built to it. The second mix-up matters more in practice: a 2K ultrawide is a much bigger job for the GPU than a 2K 27-inch.

The verdict: buy the 27-inch 1440p 240Hz QD-OLED at the bottom of the price range. Get the AOC if the $300 price is still live. It was tied to an October event, and stock was already short. If it isn't, get the Acer at $329.99, as of October 23. Spending $496.99 to $529.99 on the Samsung or MSI gets you a different coating and, on the MSI, 40Hz more refresh.

That extra 40Hz is mostly wasted with the cards that suit this monitor. In Tom's Hardware's Cyberpunk 2077 test at 1440p Ultra, the Radeon RX 9070 ran at 73.5 fps and the Radeon RX 9070 XT at 81.8 fps. Both figures come from the RX 9070 GRE review, dated June 2, 2026. The RTX 5070 figure above, 69.3 fps, comes from the June 24 GPU hierarchy, a separate article. So treat the 4 fps gap between the 5070 and the 9070 as a hint, not a head-to-head result. Either way, these cards use about a third of a 240Hz panel in a heavy game. The extra refresh headroom only pays off in lighter titles, and the $300 panel already has plenty of it.

At launch prices, which are not today's prices, the cost per Cyberpunk frame at 1440p works out to $7.47 for the RX 9070 ($549), $7.92 for the RTX 5070 ($549) and $7.32 for the RX 9070 XT ($599). A $300 monitor plus a $549 card comes to $849, so the monitor is about a third of the spend. A year ago, that share would have bought an IPS panel.