After doing some review of my case, I can confirm that my participation in the HCC_GPU_Beta_July12 event effected the download of more CPU-based WUs(*a) than what my cache-settings(*b) normally currently fetch(*c) from the WCG-servers.

Notes:
*a > I'm exclusive CFSW_CPU_prod these days, so only CFSW_CPU_prod-WUs are involved in my case.
*b > Cache-settings under Win for BOINC_v7.0.25: 1.25daysMin+1.25daysMax.
*c > When doing a sync using either the "Network activity always available" or "Network activity based on preferences".
;

While we are on the subject, I finished 7 valid on my GT 430 (Win7 64-bit), but got a strange error on the other one. It was at the time I was Snoozing GPU on BOINC, so that may have something to do with it. Also, the GT 430 is a display card, and I was also running POEM on a Radeon HD 7770 with no monitor connected to it. But in the future I will be using the non-display Radeon HD 7770 for HCC1 and so probably won't see this one again.

<core_client_version>7.0.31</core_client_version>
<![CDATA[
<message>
All pipe instances are busy. (0xe7) - exit code 231 (0xe7)
</message>
<stderr_txt>
Commandline: projects/www.worldcommunitygrid.org/wcg_beta3_img_6.47_windows_intelx86__cuda_hcc1 X0000038191035200409181616.jp2 --device 0
INFO: gpu_type set in init_data.xml to NVIDIA
INFO: gpu_opencl_dev_index set in init_data.xml to 0
Boinc requested NVIDIA gpu device number 0
Found compute platform NVIDIA Corporation
Selecting this platform
CL_DEVICE_NAME: GeForce GT 430
CL_DEVICE_VENDOR: NVIDIA Corporation
CL_DEVICE_VERSION: 301.42
----------------------------------------
Error: .\VerifyGPU.cpp:368 Out of resources
17:33:18 (1260): called boinc_finish

</stderr_txt>
]]>

Starting analysis of ../../projects/www.worldcommunitygrid.org/BETA_X0000038191432200409181610_X0000038191432200409181610.jp2...
Commandline: projects/www.worldcommunitygrid.org/wcg_beta3_img_6.47_windows_intelx86__ati14_hcc1 X0000038191432200409181610.jp2 --device 1
INFO: gpu_type not found in init_data.xml.
INFO: GPU device not specified in init_data.xml. Checking Commandline.
Boinc requested ATI gpu device number1
Found compute platform Advanced Micro Devices, Inc.
Selecting this platform
CL_DEVICE_NAME: Cypress
CL_DEVICE_VENDOR: Advanced Micro Devices, Inc.
CL_DEVICE_VERSION: CAL 1.4.1607 (VM)
CL_DEVICE_MAX_COMPUTE_UNITS: 
CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS: 3
CL_DEVICE_MAX_WORK_ITEM_SIZES: 256 / 256 / 256
CL_DEVICE_MAX_WORK_GROUP_SIZE: 256
CL_DEVICE_MAX_CLOCK_FREQUENCY: 850 MHz
CL_DEVICE_ADDRESS_BITS: 32
CL_DEVICE_MAX_MEM_ALLOC_SIZE: 512 MByte
CL_DEVICE_GLOBAL_MEM_SIZE: 1024 MByte
CL_DEVICE_ERROR_CORRECTION_SUPPORT: no
CL_DEVICE_LOCAL_MEM_TYPE: local
CL_DEVICE_LOCAL_MEM_SIZE: 32 KByte
CL_DEVICE_MAX_CONSTANT_BUFFER_SIZE: 64 KByte
CL_DEVICE_QUEUE_PROPERTIES: CL_QUEUE_PROFILING_ENABLE
CL_DEVICE_EXTENSIONS:
cl_khr_fp64
cl_amd_fp64
cl_khr_global_int32_base_atomics
cl_khr_global_int32_extended_atomics
cl_khr_local_int32_base_atomics
cl_khr_local_int32_extended_atomics
cl_khr_3d_image_writes
cl_khr_byte_addressable_store
cl_khr_gl_sharing
cl_ext_atomic_counters_32
cl_amd_device_attribute_query
cl_amd_vec3
cl_amd_printf
cl_amd_media_ops
cl_amd_popcnt
cl_khr_d3d10_sharing
Estimated kernel execution time = 0.30672 [sec]
Starting analysis of ../../projects/www.worldcommunitygrid.org/BETA_X0000038191432200409181610_X0000038191432200409181610.jp2...
Extracting GLCM features...
Total kernel time: 134.948624 (1026 kernel executions)
Total memory transfer time: 2.213670
Average kernel time: 0.131529
Min kernel time: 0.122877 (dx=23 dy=11 sample_dist=24 )
Max kernel time: 0.140982 dx=1 dy=1 sample_dist=0

It's on their end.