Which SSD has the best power efficiency for thin laptops?

Honestly, I've tested dozens of these over the years and for a budget-friendly Gen4 option, the WD Blue SN580 2TB NVMe PCIe Gen4 SSD is actually a sleeper hit. It's DRAM-less but uses a very efficient controller that stays cool even in tight spaces.

If you want the absolute best value though, here's what I'd look at:

* SK hynix Gold P31 2TB NVMe PCIe Gen3 SSD - Still the efficiency king, hands down.
* Lexar NM790 2TB NVMe PCIe Gen4 SSD - Surprisingly low power draw for the speed it offers.

I mean, if ur doing basic tasks, you wont even notice the Gen3 vs Gen4 speed difference, but you'll definitely notice that extra hour of battery life. Stick with the P31 if you can find it, it's served me well for years without any complaints! 👍

Seconding the recommendation above for the WD. tbh I've had issues with high-end drives overheating in tiny chassis before and it’s actually scary how hot they get... literally felt like it was gonna melt my logic board.

1. Stick with the Western Digital 2TB WD Blue SN580 NVMe SSD because it’s DRAM-less and runs way cooler.
2. Safety first: check if your laptop needs a 0.5mm Thermal Pad for the new drive to prevent heat soak.

Better safe than sorry ngl!

> idle power consumption is a huge factor that often gets overlooked in typical benchmarks

I went through this last year when I upgraded my travel ultrabook!! I was SO obsessed with battery life, basically spent weeks reading spreadsheets lol. Honestly, I found that sticking with DRAM-less brands is the way to go for cool palms. I just grabbed a mid-range drive from WD and the difference in heat was actually huge compared to the high-end stuff. Plus, basically any gen4 from Lexar or similar brands felt way snappier without killing my runtime. gl!

yo! i feel u on this... thin laptops basically turn into frying pans if you pick the wrong drive. honestly, for the best balance of efficiency and thermals, i HIGHLY recommend these three options based on my own testing:

1. SK hynix Gold P31 2TB NVMe Gen3 SSD: seriously the goat of efficiency. even tho it's Gen3, it basically sips power at idle and during bursts. if you want the longest battery life possible, this is it.

2. WD Blue SN580 2TB NVMe Gen4 SSD: basically the best budget Gen4 pick. it's DRAM-less but uses an efficient controller that stays sooo much cooler than high-end drives. great middle ground.

3. Lexar NM790 2TB NVMe Gen4 SSD: this one is actually insane... it uses the YMTC 232-layer NAND and is crazy efficient for the speeds you get. i mean, it literally beats some Gen3 drives in power-per-watt metrics!

good luck with the upgrade!! peace

So I usually handle all my own drive swaps because I'm a bit obsessive about how things are seated and I like to verify the controller revision myself. When I did my last thin-and-light upgrade, the biggest hurdle wasn't just picking a drive, but realizing how cramped the internal thermals actually were once I got the back plate off. I actually spent way more time digging through deep-dive technical reviews for DevSlp and L1.2 sub-state power draw data than looking at the box specs. It is honestly wild how much variation there is once you start looking at the actual milliamp draw in low-power states versus what the marketing says. Before you commit to doing the swap yourself, I have a couple of clarifying questions:

• What specific laptop model are you working with?
• Are you looking for something that stays cool during light web browsing, or do you do a lot of sustained file transfers where the controller will actually be under load for long periods? Knowing the physical clearance inside is huge because some 2TB drives are double-sided, and if you're doing a DIY install in a super thin chassis, that can cause serious mounting and heat soak issues if the NAND chips are pressed right against the motherboard.

Nice, didn't know that