5 ms·
X1 Carbon uses LPDDR3 (as does the MacBook Pro), but the CPUs don’t support more than 16GB of it, so this is kinda Intel’s fault. LPDDR3 uses very little power
by lorenzhs 9y ago
X1 Carbon uses LPDDR3 (as does the MacBook Pro), but the CPUs don’t support more than 16GB of it, so this is kinda Intel’s fault. LPDDR3 uses very little power in standby so both idle power usage and suspend time are improved.
For non-LP RAM (DDR3/DDR4), the power consumption impact of going from 16 to 32 GB is definitely not negligible. It’s an upgrade that makes sense only for few people. Have you looked at the T480/T480s if you need the 32GB? If you have CPU intensive workloads, they may be a better fit anyway.
- Roritharr 9y agoMy Toshiba Portege X-30D has 32GB and I get 6-8hours of actual work out of it easily. Loving it although I regret not having waited for 8th Gen CPUs that are available now.
- lorenzhs 9y agoI get much higher battery life out of my X1 Carbon 2017 (with the 1080p screen) and its 57Wh battery, to the point where I configured it not to charge above 90% to improve battery longevity (tlp can set charging limits on Linux). But without knowing your workload that’s a meaningless comparison, of course. Idle power consumption at medium brightness is around 3.5W for me (connected to WiFi with Chrome open but idle), maybe 5W when actively browsing. It’s amazing.
- Roritharr 9y agoI prefer being able to do more, have more VMs running than being able to be off the grid for longer than 6 hours.
- kazen44 9y agolook into the P or W series aswell, i currently use a w541 as my main machine, with 32GB of ram. (which i need for virtualization purposes)