Nearly every conversation I have about a new gaming PC lands on the same question, and it isn't which graphics card is fastest. It's how much memory is on it. Last month that question got more interesting: for the first time since Valve started counting, the most common graphics card on Steam has 16GB of video memory rather than 8GB.
What actually changed
Valve's hardware survey is the closest thing PC gaming has to a census. The July results, reported by Tom's Hardware in August, showed two firsts in the same month: 16GB cards edged past 8GB cards, and 8-core processors edged past 6-core.
Both leads are wafer-thin, so keep it in perspective. The single most common card on Steam is still an RTX 3060, a mid-range part from 2021. Nobody's saying everyone has rushed out and bought a 16GB card. The centre of gravity has shifted, though, and more and more games are built assuming it has.
Does the memory really make a difference?
This is where averages mislead people. PC Gamer ran the same games on 8GB and 16GB versions of the same cards: identical chips, only the memory differs. At 1080p with quality upscaling, the results looked like this:
| The Last of Us Part 1, Ultra (16GB card) | 113 fps avg, 92 fps 1% low |
| The Last of Us Part 1, Ultra (8GB card) | 89 fps avg, 48 fps 1% low |
| Cyberpunk 2077, Ultra RT (16GB card) | 84 fps avg, 56 fps 1% low |
| Cyberpunk 2077, Ultra RT (8GB card) | 78 fps avg, 42 fps 1% low |
Look at Cyberpunk: six frames between them on average, which nobody would notice. Then look at the 1% lows. Those are the worst moments, the hitch as you round a corner and the game hauls in new textures. That's a third slower on the 8GB card, and it's the part you actually feel while playing. Averages sell cards. The 1% lows decide whether a game feels smooth.
The same testing had better news for 8GB owners: dropping from Ultra to High closed most of the gap. In Kingdom Come: Deliverance 2 at High settings, the 8GB card managed 153 fps average with 126 fps lows. That's smooth by any measure. An 8GB card isn't broken. It just wants you to be a bit less greedy with the settings slider.
What to actually buy
Ignore the online shouting and match the card to the screen you own. That's the whole trick:
- 1080p, mostly older or competitive games: 8GB is fine, and always will be for the likes of CS2, Fortnite or Rocket League
- 1080p, new releases at High: 8GB works, with the odd setting turned down and upscaling left on
- 1440p: this is where 8GB starts to hurt. 12GB is the sensible floor and 16GB is the comfortable one
- Ray tracing or frame generation: both eat memory before they do anything else, so 16GB
- 4K, or a card you want to keep five years: 16GB, no argument
Where people waste money
- Buying a big-name card with 8GB for a 1440p monitor
- Paying a premium for VRAM they'll never fill at 1080p
- Chasing ray tracing on a card that hasn't the memory for it
- Skimping on system RAM to afford a fancier GPU
Where the money works harder
- Matching the card to the resolution you actually play at
- Taking the 16GB version of a slower chip over the 8GB version of a faster one
- Keeping a modest 8-core CPU and spending the difference on the GPU
- Buying High settings you'll keep for years, not Ultra for one season
My verdict
The 16GB era has technically arrived, but there's no need to panic. If you're gaming at 1080p on an 8GB card, you're in the same boat as a quarter of Steam and you can carry on happily for a few years yet.
Building new, or moving to a 1440p screen? Then look at the memory figure before the model number. With hardware prices where they are this year, put the money where it counts rather than just spending more.
