Giada A51 Mini PC

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Mini PC Comparison

System Measurements: Giada A51 vs. Sapphire Edge HD3
System
State
Giada A51
Sapphire Edge HD3
CPU Temp
SPL @0.6m
CPU Temp
SPL @0.6m
Idle
49°C
24~25 dBA
49°C
25~26 dBA
H.264 Playback
52°C
25 dBA
57°C
27~28 dBA
CPU Load
67°C
27 dBA
75°C
33 dBA
CPU + GPU Load
75°C
29 dBA
90°C
33 dBA
Ambient: 21°C, 10~11 dBA.
*External temperature measured using an IR thermometer pointed at the hottest portion of the external chassis
We measure SPL at 0.6m for all devices meant to be used atop a desk, as it is more realistic a distance than the usual 1m. It also corresponds to the "seated user SPL" distance specified in the computer noise measurement standard ISO 7779.

Of the mini PCs we've tested in the past couple of years, the Giada A51 stacks up most closely to the Sapphire Edge HD3 which is equipped with effectively the same APU (E-450). The A51 has the edge, running noticeably cooler and quieter in all test states, except idle where the difference was minimal. The HD3's slimmer profile seems to be more difficult to cool.

In terms of power consumption, the A51 improves on previous Brazos devices like the aforementioned Edge HD3 and the Viako ML-45. The idle and H.264 playback draw was slightly lower, making it competitive with systems using the latest iteration of Atom. The AMD chips still use much more on load but to be fair, they pack more horsepower both in the CPU and GPU department.

PERFORMANCE

CPU & GPU

As the G-T56N APU is essentially the same as the E-450, we refer you to the CPU and GPU benchmarks we attained in the Sapphire Edge HD3 review. Its CPU performance is in between that of Atom and CULV versions of Core 2. General responsiveness is not great, lagging when any type of multitasking is involved, though the hard drive might be partially responsible. Demanding tasks take a long time to complete. Its GPU is stronger than all of Intel's pre-Sandy Bridge integrated graphics but it doesn't produce acceptable framerates in most modern gaming titles except at very low resolution and detail levels. Video playback is solid, smooth on 1080p content including H.264 MKV/MOV and the Flash variety (YouTube HD).

Hard Drive

A quick run of CrystalDiskMark reveals that the Hitachi Z5K500 hard drive inside our A51 sample is quite slow by today's standards. The latest WD Scorpio Blue 500GB is the slowest recent drive we have on hand and it appears to have almost double the sequential read/write speed with large block sizes.

USB 3.0

The native USB 3.0 controller of the A50M chipset isn't impressive either, staying under 100 MB/s in sequential read/write despite our using a SandForce drive (Kingston HyperX 3K 120GB) and an easily compressible data set. Intel's latest chipsets are more than twice as fast but keep in mind that the G-T56N's main competitor, Atom, is very rarely bundled with USB 3.0 at all.



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