Monday, August 30, 2010
Logitech Z313, Aural Fast Food
Speakers are often one of the components that are an afterthought; usually decided upon at the end of a build when cash reserves might be dwindling. The market for cheap sound is a large one, and the Logitech Z313 speakers sit smack bang in the middle of it with a price tag of around $50. That cash will net you an inoffensively small subwoofer with two decent looking satellite, and a control pod that offers volume control and a power switch.
Set up is simple enough that an infant could configure them left long enough, requiring only power and a 3.5mm audio source. Annoyingly the cables are quite short at just under two metres for all distances, restricting the Z313 to use in smaller desks. Setting up the sub underneath a desk, with two satellites up top, we set about listening to Set Me on Fire by Pendulum on CD.
Due to the nature of the incredibly small speakers in the satellites the higher frequencies came out quite clearly, though the subwoofer struggled to keep up with lively low frequency beat, muddying up the mid range in the process. It didn't sound bad, but it didn't sound particularly great either - just recognisable as the song. Interestingly the sound became much clearer and more enjoyable at the highest volume, though it wavered markedly as the tiny 25W RMS rating struggled to produce consistently loud noise.
The Z313s are less impressive in Modern Warfare 2, giving no sense of situational awareness and a detached feeling that made the action seem far away, a problem intensified by tinny-sounding gunshots and grenade blasts that lacked punch. They're more than enough to play the game, but not to get right into the action.
In a way these speakers are like a cheap cheeseburger: they'll give you noise that is somewhat appealing at first for a nice price, but once you're finished listening you may not want to go back for a second bite.
Computer TechSpot
OCZ Vertex 2 100GB, The Fastest SATA 2 SSD On The Block

There is one company that appears to have done the legwork on SSDs thus far however, and OCZ has had a near perfect record with solid state technology (their PCIe based offering non withstanding). The Vertex was a great example of this, and it's been thrown back to the engineers for some tweaking: just add in a SandForce controller to replace that dusty Indilinx, cram 100GB's worth of decent multi-level flash chips in (with 7GB reserved by the controller for error correction) and sell it for four hundred bucks.
Performance is the best we've seen yet; returning sustained reads of 230.5MB/s, bursts of 249.9MB/s and access speeds of 0.1ms - though this is only marginally higher than the MX-DS 100GB drive. When full of junk data the drive returned slower averages of 201.4MB/s and bursts slightly higher at 257.4MB/s, so aim to keep some free space for top performance. OCZ also throws in a convenient 2.5" to 3.5" adapter, and the drives controller supports TRIM.
It's surprisingly snappy to use, with 2GB of small files copying in just seconds, and the three year warranty is a nice touch. While it is possible to grab the aforementioned MX-DS SSD for slightly cheaper than the Vertex 2, an extra year's worth of warranty and small performance increases do provide a tempting choice worth a HOT 9.2/10.
Computer TechSpot
Sunday, August 29, 2010
Current kitlog for the Home Theatre PC:
You don't have to follow this exactly or at all but it's a good starting point. The idea is to keep the build cool and quiet with low power draw. Note that the linked sites are Australian (I'm an Aussie) and therefore are in $AUD, peripherals are not included in this list.
CPU: Intel Core i5 760. Plenty of power for HTPC duties and a video encoding champ.
http://www.pccasegear.com/index.php?main_page=product_info&cPath=187_346_931&products_id=14941
Motherboard: Gigabyte P55M-UD4, mATX board that doesn't skimp on storage or speed.
http://www.foxcomp.com.au/ProductDetail.asp?ID=11280
Memory: G.Skill Ripjaws 2000MHz, 4GB of fast memory is plenty for running multiple HTPC media streaming apps.
http://www.pccasegear.com/index.php?main_page=product_info&cPath=186_538_913&products_id=12496
GPU: Option 1: XFX GeForce GT 220 1GB, cheap, quiet card perfect for blu ray playback and that's about it.
http://www.pccasegear.com/index.php?main_page=product_info&cPath=193_977&products_id=13627
Option 2: Gigabyte ATI HD5750 Silent Cell 1GB, more expensive silent card that will also handle games on the side, plenty of power here.
http://www.pccasegear.com/index.php?main_page=product_info&cPath=193_963&products_id=14995
Hard Drive: Western Digital Green 1.5TB, voluminous, power efficient drive that will easily hold all your pr0n, videos and music.
http://www.pccasegear.com/index.php?main_page=product_info&cPath=210_344&products_id=13198
Power Supply: Corsair HX-650, modular, quiet and more than enough power for a HTPC and then some.
(You may want to buy a cheaper lower wattage PSU, in that case perhaps the Corsair HX-520?)
http://www.pccasegear.com/index.php?main_page=product_info&cPath=15_354&products_id=12918
Case: Silverstone Grandia GD04, stylish exterior, 3x120mm fans and plenty of room.
http://www.pccasegear.com/index.php?main_page=product_info&cPath=25_608&products_id=13150
CPU Cooler: Scythe Big Shuriken, tiny profile at 58mm tall and quieter than a sponge.
http://www.pccasegear.com/index.php?main_page=product_info&cPath=207_23_845&products_id=12767
Audio Card: ASUS Xonar HDAV1.3 Slim, amazing sound and a must have for Blu-Ray playback, all in a small card.
http://www.pccasegear.com/index.php?main_page=product_info&cPath=211&products_id=12048
CPU: Intel Core i5 760. Plenty of power for HTPC duties and a video encoding champ.
http://www.pccasegear.com/index.php?main_page=product_info&cPath=187_346_931&products_id=14941
Motherboard: Gigabyte P55M-UD4, mATX board that doesn't skimp on storage or speed.
http://www.foxcomp.com.au/ProductDetail.asp?ID=11280
Memory: G.Skill Ripjaws 2000MHz, 4GB of fast memory is plenty for running multiple HTPC media streaming apps.
http://www.pccasegear.com/index.php?main_page=product_info&cPath=186_538_913&products_id=12496
GPU: Option 1: XFX GeForce GT 220 1GB, cheap, quiet card perfect for blu ray playback and that's about it.
http://www.pccasegear.com/index.php?main_page=product_info&cPath=193_977&products_id=13627
Option 2: Gigabyte ATI HD5750 Silent Cell 1GB, more expensive silent card that will also handle games on the side, plenty of power here.
http://www.pccasegear.com/index.php?main_page=product_info&cPath=193_963&products_id=14995
Hard Drive: Western Digital Green 1.5TB, voluminous, power efficient drive that will easily hold all your pr0n, videos and music.
http://www.pccasegear.com/index.php?main_page=product_info&cPath=210_344&products_id=13198
Power Supply: Corsair HX-650, modular, quiet and more than enough power for a HTPC and then some.
(You may want to buy a cheaper lower wattage PSU, in that case perhaps the Corsair HX-520?)
http://www.pccasegear.com/index.php?main_page=product_info&cPath=15_354&products_id=12918
Case: Silverstone Grandia GD04, stylish exterior, 3x120mm fans and plenty of room.
http://www.pccasegear.com/index.php?main_page=product_info&cPath=25_608&products_id=13150
CPU Cooler: Scythe Big Shuriken, tiny profile at 58mm tall and quieter than a sponge.
http://www.pccasegear.com/index.php?main_page=product_info&cPath=207_23_845&products_id=12767
Audio Card: ASUS Xonar HDAV1.3 Slim, amazing sound and a must have for Blu-Ray playback, all in a small card.
http://www.pccasegear.com/index.php?main_page=product_info&cPath=211&products_id=12048
Disk Drive: LG BH10LS30 Blu-Ray Drive, great Blu-Ray drive.
Wireless Card: TP-Link TL-WN951N, zippy 802.11N card for wireless HD video streaming.
And the grand total comes in under $1650 AUD, now go and enjoy your movies.
Computer TechSpot
Computer TechSpot
Palit GTX 470, A More Palatable Version Of This Card Than We've Seen Before
The GTX 470 seems to be the perfect card for many manufacturers: the TDP is within realistic limits for aftermarket cooling, the core is generally pliable enough to squeeze out a factory overclock, the PCB and power delivery system can be tweaked for a more cost-effective design and more importantly - there actually seems to be a decent volume of cores for them. This brings us to Palit's offering of the GTX 470, and while it has all the things listed above minus the factory overclock, it still has a lot of challenges to overcome.
Firstly and most importantly, Palit has custom designed the PCB and cooling system to great effect. Though the heatsink is a relatively standard affair (take a lump of copper, throw in a few heatpipes and whack some aluminium fins in there), its two fans do a much better job of cooling the card evenly along its length, and also keeping the power regulation under control. It looks visually interesting enough, but the performance of the cooler is great - idling at 40 degrees (Celsius) with an impressive load temp of 78 (cooling results will vary from case to case). That leaves Palit's design a whole ten degrees cooler at load than the reference cooler design, while generating similar noise levels.

This is made even more impressive by the specifications of the GF100 'Fermi' core Palit has chosen to run inside the card, boasting 448 CUDA cores and 1280MB of GDDR5 memory on a 320 bit bus. That particular core engenders a TDP rating of 215W, so Palit's cooler is very welcome here.
The enhanced cooling also lends a helping hand when it comes time to overclock, and unlike other GTX 470's, the Palit card went as high as 781MHz, a whopping 28 per cent (+173) overclock. We were also able to squeeze out a 5 per cent (+44) increase for the memory clock speed, nothing particularly breathtaking.

Though performance at stock speeds is good, our overclock resulted in a big performance boost scoring a P21859 3DMark Vantage score, a 22 per cent increase (3969 points) at no cost other than the time taken to get the overclock stable. The fact the card is so good at overclocking is interesting; but even more so is why Palit didn't give it a factory overclock. A bit of a disappointment is the fact that the packaging boasts that a free game is included, but this was simply a copy of the free demo 'Supersonic Sled' available from Nvidia. Also a disappointing note is the fact that only two of the cards display ports can be used at the same time (due to Nvidia's chip design).

Computer TechSpot
Mach Xtreme's ArmorX RAM Ain't Half Bad
Mach Xtreme (MX) is so new to the memory market that the dust has barely had time to settle, and nor does it appear to be doing so any time soon - MX has hit the ground running with a dual-channel memory kit running at 2300MHz with 8-11-8-28 timings. At these XMP profile settings we noticed slightly better wPrime scores and slightly lower PiFast scores than the G.Skill Pi series kit , though they're very similar.
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Serious Heatsinks |
Overclocking was much improved due to the unique heatsinks on the two sticks (each mounted in an alternating fashion so they can be installed side-by-side), boosting the frequency up to 2520MHz at the maximum. We even lowered the timings somewhat and kept frequencies higher, though the best result is hard to call - 2520MHz seems fastest, but potentially due to the overclocked processor.
For $220 this kit is the fastest we've seen yet, shaming slower triple-channel kits, though you need to tweak them heavily to get them to their best. We give this kit a HOT 9.0/10.
Computer TechSpot
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