{"data":{"slug":"sandisk-professional-pro-g40-ssd","type":"ssd","brand":"Sandisk","name":"Professional PRO-G40 SSD","aliases":["Sandisk Professional PRO-G40","PRO-G40 SSD","Sandisk PRO-G40","PRO-G40 Thunderbolt 3 SSD"],"release_date":"2022-10","url":"https://arkivo.dev/ssds/sandisk-professional-pro-g40-ssd","specs":{"series":null,"model_numbers":["SDPS31H-001T-GBC1D","SDPS31H-002T-GBC1D","SDPS31H-004T-GBC1D","SDPS31H-001T-GBCND","SDPS31H-002T-GBCND"],"gtins":["619659209599","619659209568","619659209612"],"announce_date":"2022-10-05","status":"available","predecessor":null,"successor":null,"launch_price_usd":null,"launch_price_eur":null,"markets":null,"colors":["Black"],"manufacturer_url":"https://www.sandisk.com/products/ssd/external-ssd/sandisk-professional-pro-g40-ssd","spec_sheet_url":"https://documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk-pro/product/portable-drives/pro-g40-ssd/data-sheet-sandisk-professional-pro-g40-ssd.pdf","manual_url":null,"eprel_registration_number":null,"warranty_years":5,"form_factor":"external","storage_gb":[1000,2000,4000],"interface":"thunderbolt_3","pcie_gen":null,"pcie_lanes":null,"nvme_version":null,"cable_detachable":true,"controller":"Sandisk in-house","nand_type":"tlc","nand_flash":"Sandisk BiCS4 TLC","nand_layers":96,"dram_cache":"dram","dram_cache_gb":null,"pcb_sides":null,"seq_read_mbs":3000,"seq_write_mbs":2500,"random_read_iops":null,"random_write_iops":null,"endurance_tbw":null,"mtbf_h":null,"operating_temperature_c":{"min_c":5,"max_c":35},"power_consumption_read_w":null,"power_consumption_write_w":null,"power_consumption_max_w":null,"power_consumption_average_mw":null,"power_consumption_idle_mw":null,"power_consumption_sleep_mw":null,"measured_seq_read_mbs":null,"measured_seq_write_mbs":null,"measured_random_read_q1_mbs":null,"measured_random_write_q1_mbs":null,"measured_slc_cache_gb":null,"measured_post_cache_write_mbs":null,"benchmark_3dmark_storage":null,"measured_max_temp_c":null,"measured_power_idle_mw":null,"heatsink":null,"rgb_lighting":null,"ip_rating":["IP68"],"drop_test_height_m":3,"security_features":null,"software_name":"SanDisk SSD Dashboard","compatible_platforms":["windows","macos"],"dimensions_mm":{"length_mm":111,"width_mm":58,"height_mm":12},"weight_g":122.3,"in_the_box":["PRO-G40 SSD","Thunderbolt 3 (40Gbps) Cable","Quick Start Guide"],"cables_included":[{"type":"USB-C to USB-C","length_m":0.2,"count":1}]},"variants":[{"model_number":"SDPS31H-001T-GBC1D","gtin":"619659209599","storage_gb":[1000],"seq_read_mbs":3000,"seq_write_mbs":2500,"weight_g":121.2},{"model_number":"SDPS31H-002T-GBC1D","gtin":"619659209568","storage_gb":[2000],"seq_read_mbs":3000,"seq_write_mbs":2500,"weight_g":122.3},{"model_number":"SDPS31H-004T-GBC1D","gtin":"619659209612","storage_gb":[4000],"seq_read_mbs":3000,"seq_write_mbs":2500,"weight_g":123.1},{"model_number":"SDPS31H-001T-GBCND","storage_gb":[1000],"seq_read_mbs":2700,"seq_write_mbs":1900,"weight_g":121.2,"dram_cache_gb":1,"launch_price_usd":299.99,"launch_price_eur":471,"measured_seq_read_mbs":3121,"measured_seq_write_mbs":2700,"measured_random_read_q1_mbs":43.36,"measured_random_write_q1_mbs":106.95,"measured_post_cache_write_mbs":1810,"measured_max_temp_c":61},{"model_number":"SDPS31H-002T-GBCND","storage_gb":[2000],"seq_read_mbs":2700,"seq_write_mbs":1900,"weight_g":122.3,"launch_price_usd":449.99,"launch_price_eur":740,"measured_seq_read_mbs":3121,"measured_seq_write_mbs":2680,"measured_random_read_q1_mbs":39.84,"measured_random_write_q1_mbs":106.25,"measured_post_cache_write_mbs":1580,"measured_max_temp_c":61}],"sources":[{"url":"https://documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk-pro/product/portable-drives/pro-g40-ssd/data-sheet-sandisk-professional-pro-g40-ssd.pdf","kind":"manufacturer_pdf","accessed":"2026-10-15","fields":["spec_sheet_url","model_numbers","gtins","colors","form_factor","storage_gb","interface","seq_read_mbs","seq_write_mbs","operating_temperature_c","ip_rating","drop_test_height_m","compatible_platforms","dimensions_mm","weight_g","warranty_years","in_the_box","variants"],"notes":{"spec_sheet_url":"Two-page SanDisk data sheet for the PRO-G40 SSD, PDF created 2023-12-01, on documents.sandisk.com. It lists 1TB, 2TB and 4TB with the GBC1D part numbers","model_numbers":"Worldwide SKU table: SDPS31H-001T-GBC1D, SDPS31H-002T-GBC1D and SDPS31H-004T-GBC1D. The 2022 launch part numbers SDPS31H-001T-GBCND and SDPS31H-002T-GBCND come from Tom's Hardware's spec table. The sheet also lists China SKUs ending ZBC1D, which are not stored","gtins":"UPC column for the worldwide SKUs: 6 19659 20959 9 (1TB), 6 19659 20956 8 (2TB) and 6 19659 20961 2 (4TB). Stored as 12-digit UPC. The sheet gives no GTINs for the GBCND launch parts","colors":"Color column reads Black for every SKU","form_factor":"Portable SSD in a rugged case that connects by a USB-C port, so stored as external","storage_gb":"Capacity column: 1TB, 2TB and 4TB. Footnote: 1 TB = 1 trillion bytes","interface":"Interface row reads Thunderbolt 3 (40Gbps) and SuperSpeed USB 10Gbps (USB 3.2 Gen 2). Stored as the highest mode, Thunderbolt 3","seq_read_mbs":"Data Transfer Rate row, Thunderbolt 3: up to 3000MB/s read. USB-C: up to 1050MB/s read, not stored. Footnote: internal testing, 1 MB/s = 1 million bytes per second, performance may vary by host device, usage conditions and drive capacity. The same figure is given for all three capacities","seq_write_mbs":"Thunderbolt 3: up to 2500MB/s write. USB-C: up to 1000MB/s write, not stored. Same figure for all three capacities","operating_temperature_c":"Operating Temperature row: 41 to 95 F | 5 to 35 C","ip_rating":"Key features: high-level IP68 dust/water resistance","drop_test_height_m":"Key features: up to 3m drop protection, footnote 3 based on internal testing. The surface is not stated in the sheet. The 2022 press release says the drop was onto a carpeted concrete floor","compatible_platforms":"Operating Systems row: macOS 10.13+ (Time Machine compatible), Windows 10+. The drive ships formatted exFAT, APFS via reformat","dimensions_mm":"Size (LxWxH) row: 4.36 x 2.28 x 0.47 in | 111 x 58 x 12 mm. The store page prints 4.37 x 2.28 x 0.47 in","weight_g":"Weight row: 1TB 121.2 g, 2TB 122.3 g and 4TB 123.1 g. Base value is the 2TB model","warranty_years":"5 YR limited warranty. The sheet points to sandisk.com/wug for terms and names no market","in_the_box":"Box contents row: PRO-G40 SSD, Thunderbolt 3 (40Gbps) Cable and Quick Start Guide","variants":"Three GBC1D rows with their own part numbers, UPCs and weights. Speeds are the same for the three capacities. The two GBCND launch rows come from the 2022 press release and reviews"}},{"url":"https://www.sandisk.com/products/ssd/external-ssd/sandisk-professional-pro-g40-ssd","kind":"manufacturer_page","accessed":"2026-10-15","fields":["manufacturer_url","status"],"notes":{"manufacturer_url":"SanDisk US product page for the PRO-G40 SSD with a capacity picker for 1TB, 2TB and 4TB. Its spec table repeats the data sheet: up to 3000MB/s read and 2500MB/s write, Thunderbolt 3 and USB 3.2 Gen 2, 5-year limited warranty and the GBC1D part numbers","status":"The page is live in October 2026 with the three GBC1D SKUs. Amazon US showed the 4TB at rank 51 in External Solid State Drives with 1,098 reviews"}},{"url":"https://www.westerndigital.com/de-at/company/newsroom/press-releases/2022/2022-10-05-western-digital-turbocharges-versatility-with-new-sandisk-professional-pro-g40-ssd","kind":"press_release","accessed":"2026-10-15","fields":["announce_date","release_date","drop_test_height_m","variants"],"notes":{"announce_date":"Western Digital press release dated 2022-10-05, San Jose, California","release_date":"The release says the drive is available now in the United States in 1TB and 2TB. The first retail month is taken as October 2022. The 4TB and the GBC1D part numbers came later, and no launch month was found for them","drop_test_height_m":"Footnote says the 3m drop was tested on a carpeted concrete floor. Launch speeds in the release were up to 2700MB/s read and 1900MB/s write over Thunderbolt 3","variants":"GBCND rows: 1TB and 2TB at launch with 2700MB/s read and 1900MB/s write over Thunderbolt 3, and US MSRP $299.99 (1TB) and $449.99 (2TB) without sales tax, stored as launch_price_usd in those rows only. The later data sheet and store page raise the claim to 3000 and 2500MB/s for the GBC1D part numbers"}},{"url":"https://www.storagereview.com/review/sandisk-professional-pro-g40-review","kind":"press","accessed":"2026-10-15","fields":["variants"],"notes":{"variants":"StorageReview launch article of 2022-10-05: MSRP $299.99 (1TB) and $449.99 (2TB), released that day. It is not a benchmark review and has no 3DMark Storage result. The same article gives weights of 121.2 g (1TB) and 122.3 g (2TB), the same as the data sheet"}},{"url":"https://www.computerbase.de/2022-10/sandisk-professional-externe-pro-g40-ssd-ist-schnell-und-teuer/","kind":"press","accessed":"2026-10-15","fields":["variants"],"notes":{"variants":"ComputerBase, 2022-10-07: unverbindliche Preisempfehlung 471 Euro for the 1TB and 740 Euro for the 2TB, confirmed by Western Digital on request. The article does not name the country or tax. It is a German site and a German retailer list price of 470.99 and 739.99 Euro including VAT matches, so the figures are read as German prices with VAT. Stored as launch_price_eur in the 1TB and 2TB GBCND rows only"}},{"url":"https://www.tomshardware.com/reviews/sandisk-pro-g40-ssd-review","kind":"review_site","accessed":"2026-10-15","fields":["controller","nand_type","nand_flash","nand_layers","dram_cache","cable_detachable","software_name","cables_included","variants"],"notes":{"controller":"Spec table row Controller reads SanDisk Proprietary, written as Sandisk in-house like the Optimus GX PRO 850X. Text: the SSD inside is the SN750E, with the same controller as the WD Red SN700. The review tested the 2022 launch drive. No teardown of a GBC1D drive was found. Bridge chips: Intel Titan Ridge JHL7440 for Thunderbolt 3 and the ASMedia ASM2362 for USB 3.2 Gen 2. TheSSDReview names the same chips","nand_type":"Text: 1TB of 96-layer BiCS4 TLC in two 512GB packages","nand_flash":"Spec table row Memory reads SanDisk 96-Layer BiCS4, the same for 1TB and 2TB. Stored for the base 2TB as the maker for all capacities. Not checked on a GBC1D drive","nand_layers":"96 layers from the Memory row","dram_cache":"Spec table row DRAM reads DDR4 for both capacities. Text: the drive has DRAM, so no Host Memory Buffer","cable_detachable":"The drive has a reinforced USB-C port and a Type-C to Type-C cable is in the box","software_name":"Text: SanDisk also provides its own SSD Dashboard software","cables_included":"Text: a relatively short 20cm (about 8 inch) USB Type-C to Type-C cable. TheSSDReview also says 20cm / 8 inch","variants":"1TB GBCND row: the 1TB teardown shows 1GB of SK hynix DDR4, stored as dram_cache_gb 1. The DRAM size of the 2TB is not stated, so the base has none"}},{"url":"https://www.tomshardware.com/reviews/sandisk-pro-g40-ssd-review/3","kind":"measurement","accessed":"2026-10-15","fields":["variants"],"notes":{"variants":"1TB GBCND row. Published 2022-11-17. Thunderbolt 3 mode, test host not named on the page. Values are read from the review's charts. CrystalDiskMark SEQ1M Q8T1 read 3,121 MBps and write 2,700 MBps. Random 4KB QD1 read 10,585 IOPS and write 26,110 IOPS, converted to MB/s as IOPS x 4096 / 1,000,000 and stored as 43.36 and 106.95. Iometer sequential write 1MB QD32 for 15 minutes: about 2,500 MBps for roughly seven seconds, then a flat state at about 1,810 MBps, stored as the post-cache write speed. The cache size is not stored since the chart gives no GB figure. USB 10Gbps results are not stored. Test size and drive fill are not stated. KitGuru did not review the drive"}},{"url":"https://www.tomshardware.com/reviews/sandisk-pro-g40-ssd-review/2","kind":"measurement","accessed":"2026-10-15","fields":["variants"],"notes":{"variants":"2TB GBCND row. Update of 2022-11-28. Thunderbolt 3 mode, values read from the charts. CrystalDiskMark SEQ1M Q8T1 read 3,121 MBps and write 2,680 MBps. Random 4KB QD1 read 9,727 IOPS and write 25,941 IOPS, stored as 39.84 and 106.25 MB/s with the same conversion. Iometer sequential write for 15 minutes: about 2,500 MBps for roughly twelve seconds, then a flat state at about 1,580 MBps, stored as the post-cache write speed. The 2TB read equals the 1TB read exactly at 3,121 MBps. Temperature: the text says the 2TB idled at 45 C and hit a maximum of 61 C, the same as the 1TB. Ambient is typically 24 C, the load is sustained writes at full speed, and the page names a sensor and an infrared thermometer without saying which gave 61 C. The same 61 C is stored for the 1TB row"}},{"url":"https://www.thessdreview.com/hardware/portable-ssds/sandisk-professional-pro-g40-thunderbolt-3-dual-mode-portable-ssd-review-unbelievable-3-1gb-s-data-transfer-speeds/","kind":"review_site","accessed":"2026-10-15","fields":["controller","cables_included"],"notes":{"controller":"The review could not open the case. It says the drive uses a SanDisk SN750e M.2 SSD with an Intel JHL7440 Thunderbolt 3 controller and an ASMedia ASM2362 USB 3.2 controller","cables_included":"Comes with a 20cm / 8 inch Thunderbolt 3 cable"}}],"fields_filled":28,"updated":"2026-10-16"},"meta":{"api_version":"1","docs":"https://arkivo.dev/api"}}