Mersenne.ca download mirror

Showing directory: /mfaktc/windows/
Parent Directory

Why so many builds?

Different CUDA versions support different hardware (compute capabilites), and different driver versions support different CUDA versions. As such, we need multiple builds to support all the various hardware/software combinations.
GPUSieveSize and older GPUs:
Older GPUs (all GTX 1xxx and older, and any with less than 8GB RAM) may have trouble running with the current default GPUSieveSize setting of 2047. If you have problems, set it to 128 in mfaktc.ini and try increasing it (256, 512, 1024). Higher values give slightly better performance at risk of lag (or crash) if the GPU has insufficient RAM.
Support thread: MersenneForum

Use mfaktc with AutoPrimeNet.

Which build do I use?

The one that matches (or is the closest less-than-or-equal-to) the CUDA version supported by your driver.
e.g. Driver supports CUDA 12.1, use the build that targets CUDA 12.0.

To check your driver's CUDA version using the NVIDIA Control Panel, open the "Help" menu, "System Information", "Components" tab,
look for filename NVCUDA64.DLL (or NVCUDA32.DLL on 32-bit) in the left column, then in the right column ("Product Name") you
should see something like "NVIDIA CUDA 12.7.33 driver": the "12.7" is your CUDA version.
Another way to check is to run nvidia-smi (from a command prompt), which reports the supported CUDA version on the first line
(on driver 410.72 and newer1).

The below table shows the CUDA versions and recommended builds for some of the more popular driver versions:


Driver Version CUDA Windows 64-bit Windows 32-bit Notes
R555+ (555.85 and later) latest mfaktc-0.24.0-beta.6-win64-cuda12.9.0.zip
R470 (470.xx to 475.xx) 11.4 mfaktc-0.24.0-beta.6-win64-cuda11.4.4.zip last driver to support Kepler GPUs, Windows 7-8.1
R418 (418.xx to 425.xx) 10.1 mfaktc-0.24.0-beta.6-win64-cuda10.0.130.zip last GeForce driver to support Kepler GPUs on Laptop
R390 (390.xx to 392.xx) 9.1 mfaktc-0.24.0-beta.4-win64-cuda9.0-CC30toCC70.zip mfaktc-0.24.0-beta.4-win32-cuda9.0-CC30toCC70.zip last driver to support Fermi GPUs, 32-bit OSs
R365
R367
(365.xx to 368.xx) 8.0 mfaktc-0.24.0-beta.6-win64-cuda8.0.61.zip mfaktc-0.24.0-beta.4-win32-cuda8.0-CC20toCC62.zip R365: last GeForce driver to support Windows Vista
R367: last GeForce driver to support Windows XP
R340 (340.xx to 342.xx) 6.5 mfaktc-0.24.0-beta.4-win64-cuda6.5-CC11toCC50.zip mfaktc-0.24.0-beta.4-win32-cuda6.5-CC11toCC50.zip last driver to support Tesla GPUs
R304 (304.xx to 309.xx) 5.0 mfaktc-0.24.0-beta.4-win64-cuda5.0-CC11toCC35.zip mfaktc-0.24.0-beta.4-win32-cuda5.0-CC11toCC35.zip last driver to support Curie GPUs, Windows XP on Laptop

File NameFile SizeDate ModifiedHash
mfaktc-0.24.0-beta.6-win64-cuda10.0.130.zip3,461,1202025-08-20ea23afd43f7874716e42518a7549a80b
mfaktc-0.24.0-beta.6-win64-cuda11.0.1.zip3,430,4002025-08-20a4ebb8130a429a0b2db318e39d10e21f
mfaktc-0.24.0-beta.6-win64-cuda11.1.1.zip3,747,8402025-08-207eab8231eadea352e0fab40f3e615931
mfaktc-0.24.0-beta.6-win64-cuda11.2.2.zip3,799,0402025-08-20b9b55dbd9c2907b7f0afcd6e943e444d
mfaktc-0.24.0-beta.6-win64-cuda11.3.1.zip3,809,2802025-08-204427f2c40b46aa0cae5091ee6682cfac
mfaktc-0.24.0-beta.6-win64-cuda11.4.4.zip4,034,5602025-08-20b9cede5b9bedad2132cb6031108d554d
mfaktc-0.24.0-beta.6-win64-cuda11.5.2.zip4,003,8402025-08-204993f7604c6f6db8f1e3a75cc7ce576a
mfaktc-0.24.0-beta.6-win64-cuda11.6.2.zip4,014,0802025-08-20873e7c70b4ccd17f5660ac7f103e77ec
mfaktc-0.24.0-beta.6-win64-cuda11.7.1.zip4,003,8402025-08-20eda6f44ebe944a6007fa9d8b0b432e8c
mfaktc-0.24.0-beta.6-win64-cuda11.8.0.zip4,556,8002025-08-20f868c903b0fd9852e7e9ad865db0854c
mfaktc-0.24.0-beta.6-win64-cuda12.0.1.zip4,239,3602025-08-2000258745aaf8b7dc2a8efa2d90b198c2
mfaktc-0.24.0-beta.6-win64-cuda12.1.1.zip4,239,3602025-08-2043d113ff0fe17106fd65ecc3726c40b8
mfaktc-0.24.0-beta.6-win64-cuda12.2.2.zip4,259,8402025-08-208aba410e64e159d7811257c274c7a773
mfaktc-0.24.0-beta.6-win64-cuda12.3.2.zip4,249,6002025-08-2084878131147dced1123a65fd73a28325
mfaktc-0.24.0-beta.6-win64-cuda12.4.1.zip4,239,3602025-08-204c012b68de31432dbaf2afabe82dc32e
mfaktc-0.24.0-beta.6-win64-cuda12.5.1.zip4,239,3602025-08-20cae69c11848056ef5268739fc6184c43
mfaktc-0.24.0-beta.6-win64-cuda12.6.3.zip4,229,1202025-08-208e3de8b8409dfca3e1eac3af78eef103
mfaktc-0.24.0-beta.6-win64-cuda12.8.1.zip5,222,4002025-08-20f0f6cb59ac59a9594f02adeb69598f6f
mfaktc-0.24.0-beta.6-win64-cuda12.9.0.zip5,877,7602025-08-20ef4d48b2c3eff6ea739f92296f627af5
mfaktc-0.24.0-beta.6-win64-cuda8.0.61.zip2,662,4002025-08-20c8872055228d86b4d1f276b6e94501b8
mfaktc-0.24.0-beta.6-win64-cuda9.2.148.zip3,215,3602025-08-20d2f4c1df8e037a0320cd312d5043d959
Generated 18 Sep 2025 1:15am