A:Answer Hi Zen, thank you for contacting us. Please note that the SanDisk WD_BLACK 4TB SN850X NVMe Internal Gaming Solid State Drive, model number WDS400T2X0E, is specifically the model without a heatsink. You can find the model with a heatsink under model number WDS400T2XHE.
![INSANE SPEEDS UP TO 7,300MB/S1, [1-4TB MODELS]
[1] Based on read speed. 1 MB/s = 1 million bytes per second. Based on internal testing; performance may vary depending upon host device, usage conditions, drive capacity, and other factors.](https://pisces.bbystatic.com/image2/BestBuy_US/images/products/6c421482-75ea-49e8-967c-bef9873f54f7.jpg)
![CAPACITIES FROM 1TB TO 8TB²
WD_BLACK SN850X NVMe SSD
[2] 1GB = 1 billion bytes and 1TB = 1 trillion bytes. Actual user capacity may be less depending on operating environment.](https://pisces.bbystatic.com/image2/BestBuy_US/images/products/433ed7cf-3141-4f01-9f07-f64c8614d0af.jpg)
![NEAR-MAX PCIe GEN4³ SPEEDS
850 GEN4 NVMe™ SSD
www.wdc.com
WD_BLACK SN850X
Western Digital
Works with PCIe 3.0 notch slots only
[3] PCIe Gen4 storage technology requires a compatible motherboard. WD_BLACK SN850X is backwards-compatible with PCIe Gen3.](https://pisces.bbystatic.com/image2/BestBuy_US/images/products/7fcb1bc1-8b00-4692-937d-5a9e81dbc2e1.jpg)
![INSANE SPEEDS UP TO 7,300MB/S1, [1-4TB MODELS]
[1] Based on read speed. 1 MB/s = 1 million bytes per second. Based on internal testing; performance may vary depending upon host device, usage conditions, drive capacity, and other factors.](https://pisces.bbystatic.com/image2/BestBuy_US/images/products/d1e5b8b1-c289-46f0-873a-1db7a11c3c0c.jpg)
![CAPACITIES FROM 1TB TO 8TB²
WD_BLACK SN850X
Western Digital
www.wdc.com
WD_BLACK SN850X NVMe™ SSD
[2] 1GB = 1 billion bytes and 1TB = 1 trillion bytes. Actual user capacity may be less depending on operating environment.](https://pisces.bbystatic.com/image2/BestBuy_US/images/products/bd61bb75-1259-40d6-ad09-4dcaabad9dff.jpg)
