Here's what happens with
2 GPUs both enabled:
Mon May 26 01:54:08 2014
05:54:08:458 info: GetVideoCardInfoEx: Cards = 2, Enables = 2
05:54:08:473 info: GetVideoCardInfoEx: - Intel(R) HD Graphics Family
05:54:08:473 info: IntelCPUInfo::IsIntelMediaSDKSupport: nProcessorSignature = 40651
05:54:08:473 info: IntelCPUInfo::IsIntelMediaSDKSupport: strCPUBrand = Intel(R) Core(TM) i7-4500U CPU @ 1.80GHz
05:54:08:473 info: GetVideoCardInfoEx: - NVIDIA GeForce GT 735M
05:54:09:022 info: GetVideoCardInfoEx: Xφ - 5.50 - 3.5
05:54:09:453 info: gpuGetMaxGflopsGLDeviceIdDRV: device_count - 1 - cuda_api_version = 5050 -
05:54:09:469 info: gpuGetMaxGflopsGLDeviceIdDRV: bTCC - 0 - computeMode = 0 -
05:54:09:469 info: gpuGetMaxGflopsGLDeviceIdDRV: major = 3, minor = 5, clockRate = 627500
05:54:09:469 info: gpuGetMaxGflopsGLDeviceIdDRV: deviceName - GeForce GT 735M - benchmark divided by 10000 = 24096 -
05:54:09:469 info: DetectVideoCard_CUDA: bestCudaDetectInfo 1,0,24096,3,5,GeForce GT 735M
05:54:09:484 info: fab_check::check_cuda: cudaStatus = 0 , modeType = 56 , devCap = 1
05:54:09:484 info: fab_check::check_cuda: AcquireWriteBlock OK.
05:54:10:047 info: intel_common::get_best_hardware_apiversion: Intel Media SDK. MFXInit Fail -3
05:54:10:047 info: fab_check::check_intelcodec: modeType = 0 , b_isQuickSyncVideoIntelCpu = 1
05:54:10:047 info: main: end
2 GPUs only Intel active
Mon May 26 03:01:55 2014
07:01:55:151 info: GetVideoCardInfoEx: Cards = 2, Enables = 1
07:01:55:155 info: GetVideoCardInfoEx: - Intel(R) HD Graphics Family
07:01:55:158 info: IntelCPUInfo::IsIntelMediaSDKSupport: nProcessorSignature = 40651
07:01:55:161 info: IntelCPUInfo::IsIntelMediaSDKSupport: strCPUBrand = Intel(R) Core(TM) i7-4500U CPU @ 1.80GHz
07:01:55:520 info: intel_common::get_best_hardware_apiversion: Intel Media SDK. imp = 514, API Level: 1.7
07:01:55:546 info: intel_common: DetectIntelCardAttachedMonitor: Des - Intel(R) HD Graphics Family Ven - 8086
07:01:55:550 info: intel_common: DetectIntelCardAttachedMonitor: DriverVer - 9.18.7.6
07:01:55:553 info: intel_common::init_mfx_session: - before init - 0
07:01:55:576 info: intel_common::init_mfx_session: - after init - 0
07:01:55:578 info: fab_check::check_intelcodec: modeType = 259 , b_isQuickSyncVideoIntelCpu = 1
07:01:55:581 info: main: end
on the other hand, the intel may not be sufficient to accelerate the ripping (I don't have one to know how fast it is, but just with an i7 it takes ages)