{"id":6416,"date":"2025-08-09T14:11:55","date_gmt":"2025-08-09T19:11:55","guid":{"rendered":"https:\/\/www.summet.com\/blog\/?p=6416"},"modified":"2025-08-09T14:11:55","modified_gmt":"2025-08-09T19:11:55","slug":"sandisk-512gb-ultra-luxe-usb-3-2-gen-1-flash-drive-sdcz74-512g-gam46-extremely-slow-write-speeds","status":"publish","type":"post","link":"https:\/\/www.summet.com\/blog\/2025\/08\/09\/sandisk-512gb-ultra-luxe-usb-3-2-gen-1-flash-drive-sdcz74-512g-gam46-extremely-slow-write-speeds\/","title":{"rendered":"SanDisk 512GB Ultra Luxe USB 3.2 Gen 1 Flash Drive – SDCZ74-512G-GAM46 – Extremely Slow Write Speeds"},"content":{"rendered":"

I purchased a SanDisk 512GB Ultra Luxe USB 3.2 Gen 1 Flash Drive with the markings: “SDCZ74-512G-GAM46” on it about a year ago<\/a>, and it worked “fine” but the write speed was much slower than it should be (around 4 MB\/s in sustained writes) so backups to the drive were taking 4-8 times longer than they should.<\/p>\n

I eventually got tired of this, and sent it back to SanDisk for a warranty replacement, and I’m happy to report that the replacement Ultra Luxe drive [USB 3.1 Flash Drive] with markings “512GB\u00a0 BR200357930W SDCZ74 Made in Malaysia” works much better. [27 MB\/s sustained writes on a 252 GB file system, 90+ MB\/s reads on a 2.8 GB file.]<\/p>\n

There are two remaining downsides that keep this from being the perfect “keyring” backup drive. 1) It gets very hot to the touch (I’ve measured temps as high as 124 F when writing for multiple hours….).\u00a0 2) I wish that the hole on the back of the drive was just slightly larger. If you orient it correctly on a keyring, it will fit snugly against other keys, but the hole isn’t large enough to let it “rotate” on the keyring so the ring can rotate and fold flat in your pocket.<\/p>\n

So, if you have a SanDisk flash drive that isn’t working as fast as it should, try the warranty replacement process. Here is a photo of the back of the good drive:
\n\"\"<\/a>

I purchased a SanDisk 512GB Ultra Luxe USB 3.2 Gen 1 Flash Drive with the markings: “SDCZ74-512G-GAM46” on it about a year ago, and it worked “fine” but the write speed was much slower than it should be (around 4 … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-6416","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/www.summet.com\/blog\/wp-json\/wp\/v2\/posts\/6416","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.summet.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.summet.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.summet.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.summet.com\/blog\/wp-json\/wp\/v2\/comments?post=6416"}],"version-history":[{"count":1,"href":"https:\/\/www.summet.com\/blog\/wp-json\/wp\/v2\/posts\/6416\/revisions"}],"predecessor-version":[{"id":6418,"href":"https:\/\/www.summet.com\/blog\/wp-json\/wp\/v2\/posts\/6416\/revisions\/6418"}],"wp:attachment":[{"href":"https:\/\/www.summet.com\/blog\/wp-json\/wp\/v2\/media?parent=6416"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.summet.com\/blog\/wp-json\/wp\/v2\/categories?post=6416"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.summet.com\/blog\/wp-json\/wp\/v2\/tags?post=6416"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}