In OpenCL, each GPU is a compute device and then a system with two Radeon HD 6970 should have two compute devices. For regular 3D this is a normal requirement, but we are talking about GPU computing. This test of oclHashcat was interesting because it taught me that to take advantage of several Radeon GPUs in OpenCL, CrossFire must be enabled. Radeon HD 6970 CrossFire – GPU usage under oclHashCat Just for the sake of memory, here are some GFLOPS ( source):Īnd here is the GPU usage of the HD 6970 CF: The Radeon HD 6970 seems to be the card of choice for password crackers □ The performance of the HD 6970 is very good (and I’m sure we’ll see performance boost with future drivers) and according to this test, one Cayman is faster than two GF100. – Radeon driver: Catalyst 10.12 (APP version for OpenCL support)įor GeForce boards I launched cudaExample.cmd and oclExample.cmd for Radeon boards. Just install Catalyst 10.12 APP and you’re ok. OclHashcat 0.2.4 requires ATI Stream v2.3 for Radeon HD 6000 Series support. Includes hashcats entire rule engine to modify wordlists on start.The first and only GPU-based Fingerprint-Attack engine.Runs very cautious, you can still watch movies or play games while cracking.Combines Dictionary-Attack with Mask-Attack to launch a Hybrid-Attack.Supports wordlists (not limited to Brute-Force / Mask-Attack).Fastest multihash MD5 cracker on ATI 5xxx cards.Fastest multihash MD5 cracker on NVidia cards.Multi-Algo (MD4, MD5, SHA1, DCC, NTLM, MySQL, …).Multi-Platform (OpenCL and CUDA support).Multi-OS (Linux and Windows native binaries).Then no apple-to-apple comparison but only OpenCL / Radeon vs CUDA / GeForce… I wonder why oclHashCat OpenCL support is not enabled on GeForce boards? I tried to use it on the GTX 580 and here is the error message: It seems the OpenCL version is only limited to Radeon cards. oclHashcat is available in two versions: OpenCL (oclHashcat) and CUDA (cudaHashcat). oclHashcat is able to use up to 16 GPUs to achieve its job. oclHashcat is the GPU accelerated version of Hashcat, a MD5 password cracker. A new version of oclHashcat is available.
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