APRIL 2020 PCWorld 45S10 (UFS 2.1)
Sequential read: 802.13 MBps
Sequential write: 188.34 MBps
Random read: 34,612.61 IOPS
Random write: 7,383.57 IOPS
OnePlus 7T (UFS 3.0)
Sequential read: 1,436.19 MBps
Sequential write: 210.4 MBps
Random read: 44,158.73 IOPS
Random write: 7,189 IOPS
Add up the chip, RAM, and storage, and
you’ve got a downright monster of a phone
that’s faster than most Chromebooks and can
even give some PCs a run for their money. It’s
so powerful, Samsung could probably rest on
its laurels for the next two generations and still
keep pace with its competitors.
GREAT BATTERY,
SO-SO 5G
Samsung has loaded the
S20 Ultra with a 5,000mAh
battery—its biggest ever, and
a sign that it’s finally ready to
push the limits of battery
capacity after the Galaxy
Note 7’s exploding-battery
debacle (go.pcworld.com/
xpbt).
The S20 needs it. With
5G active and 120Hz motion
smoothness flipped on, I was
barely able to make it through a full day of
heavy use. With the 120Hz refresh off, WQHD
on, and 5G enabled, I was able to last a good
part of a second day, which is iPhone 11 Pro
Max territory. Benchmarks topped 10 hours in
both cases, but 120Hz zapped more than
three hours of use, so you’ll definitely want to
consider whether it’s worth it to you. The
bundled 25W charger fills up the Ultra in
about an hour and a half, but it also supports
45W charging—if you have the right charger. I
tested numerous 60W chargers and none of
them worked, so you’ll probably need
Samsung’s proprietary one (go.pcworld.
com/schr).
The same goes for 5G. While all S20
phones sold in the United States will have a
5G modem, you can opt to turn it off in
settings, which will give battery life a slight
uptick. That’s obviously something you’ll wantThe buttons on the S20 Ultra have all been moved to the right side.