Motherboard peripheral performance — continued
Serial ATA performance
|CrystalDiskMark Serial ATA performance (MB/s)|
|Sequential||Random 4KB||Random 4KB QD32|
|Asus P8Z77-V (ASMedia)||366||367||20||48||208||145|
|MSI Z77A-GD65 (ASMedia)||364||364||21||46||211||147|
|FileBench Serial ATA performance (MB/s)|
|Asus P8Z77-V (ASMedia)||305||387||183||241|
|MSI Z77A-GD65 (ASMedia)||309||393||190||240|
There are two lessons to be learned from our Serial ATA results. The Z77's SATA performance is pretty consistent from one board to the next. It's also notably faster than the auxiliary ASMedia solution found on the Asus and MSI mobos. Only use those auxiliary SATA ports as a last resort.
|NTttcp Ethernet performance|
|Throughput (Mbps)||CPU utilization (%)|
|FileBench Ethernet performance (MB/s)|
FileBench works for network transfers, too. There isn't much difference in movie transfer speeds. However, the Atheros Gigabit Ethernet controller on the Gigabyte board offers better performance in the mixed tests. That's particularly notable because the Asus and MSI boards both use Intel GigE chips. The system at the other end of the CAT6 cable in these tests is also based on an Intel network controller.
There is a catch, of course. The Z77X-UD3H's CPU utilization is a little higher than the others in the NTttcp throughput test. I'd happily trade 2.5% of the Core i7-2600K's CPU resources for faster network transfer speeds.
PCI Express performance
|HD Tune PCIe performance|
|Read (MB/s)||CPU utilization (%)||Read (MB/s)||CPU utilization (%)|
Our RevoDrive PCIe SSD is insanely fast on all the boards. The MSI is the only one to push CPU utilization into double-digit territory, but we're only talking about a difference of a few percentage points versus the rest of the field.
Analog audio signal quality
|RightMark Audio Analyzer audio quality: 24-bit/192kHz|
|Frequency response||Noise level||Dynamic range||THD||THD + Noise||IMD + Noise||Stereo Crosstalk||IMD at 10kHz||Overall score|
According to RMAA's loopback test, the MSI Z77A-GD65 has better overall analog signal quality than the others. The individual test results are pretty close, though. If you're really worried about analog signal quality, you're better off with a discrete sound card. If you're not, features like speaker virtualization and real-time encoding support may be more important to you than minute differences in frequency response or dynamic range.
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