Conroe Buying Guide: Feeding the Monster
by Gary Key & Wesley Fink on July 19, 2006 6:20 AM EST- Posted in
- Motherboards
ASRock 775Dual-VSTA
Basic Features
The ASRock 775Dual-VSTA is a very unusual board at a low entry price of $55. It is true that ASRock sometimes marches to the beat of different drummer, and the 775Dual-VSTA is certainly evidence of that. If nothing else, you can say they offer some very uniquely configured boards that offer very good quality for the money. This board features the VIA PT880 Pro Northbridge and VT8237A Southbridge with VRM and BIOS updates that now fully support Core 2 Duo. This is a board that you really want to dislike from a performance viewpoint, but you have to like it from an upgradeability perspective. Well, at least for those users who want to bring along their DDR and AGP cards while buying an E6300 CPU as an example.
The board is laid out nicely and certainly caters to those who value IDE and PCI devices. The VT8237A only supports two SATA 1.5Gbps drives but the board does support four IDE devices. The overall feature set of the VIA chipset is the same as the Biostar PT880 Pro board we reviewed a few months back.
Basic Performance
The performance was not as bad with a Core 2 Duo as we had expected. In fact, in almost all of our benchmarks the board was at least in shouting distance of the other contestants. We actually found the DDR2 memory performance to be very competitive with the other boards, although support is limited to DDR2-533 and DDR2-667. We just received an updated BIOS that allows greater DDR support and improved timings. We will provide these performance results when we compare the board to an Intel 865 based board that supports Core 2 Duo in the near future.
The other potential issue is a PCIe graphics slot that only supports X4 operation. This proved to be an issue in benchmarks that tend to stress the GPU interface. Although ASRock only lists official PCIe support for video cards such as the NVIDIA 6600/6800GT or ATI X700 range, we had no difficulties running our ATI X1900XTX or EVGA 7900GTX in the board - though we never quite trusted it due to power delivery concerns. The board on a couple of occasions while overclocking completed a brown out while either GPU was being stressed in 3DMark06. In the end, you are paying around $55 for a board that can handle your older or newest peripherals and still provide a decent level of performance. We have to hand it to ASRock on fulfilling these requirements with a stable board, but we look forward to their Intel based value boards which should be arriving shortly.
Overclocking
We did not expect much in the way of overclocking with this board and this is about what we got. However, the board did overclock further than we expected - a pleasant surprise - and we almost reached the 300FSB level with our test components. The board actually reached a 303FSB setting with an NVIDIA 6800 Ultra AGP card and some inexpensive DDR 333 memory. However, anything higher resulted in a no boot condition and clearing of the CMOS. In the end, you get what you pay for, although sometimes there is a surprise in the box of chocolates. We were surprised by this board, first for its ability to operate fine with a Core 2 Duo, and secondly that the general performance of the board was actually very good overall considering its heritage. It was kind of slow at times, but it still managed to consistently finish the race.
Basic Features
| ASRock 775Dual-VSTA | |
| Market Segment: | Budget/Entry Level |
| CPU Interface: | Socket T (Socket 775) |
| CPU Support: | LGA775-based Pentium 4, Pentium D, Core 2 Duo, Celeron D, Pentium XE |
| Chipset: | VIA PT880 Pro + VT8237A |
| Thermal Design: | 4-phase power Passive Northbridge Cooling |
| Bus Speed Support: | 1066/800/533MHz |
| Bus Speeds: | 90 to 340 in 1MHz Increments |
| Memory Ratios: | DDR2 - Auto, 533, 667 DDR- Auto, 266,333,400 |
| PCIe Speeds: | Auto, 90MHz~170MHz |
| PCI: | Auto, 33.33MHz to 37.50MHz |
| CPU Voltage: | Default |
| CPU Clock Multiplier: | Auto, Fixed to Stock Multiplier |
| DRAM Voltage: | Auto, High, Normal, Low |
| DRAM Timing Control: | Auto, 12 Options |
| V-Link: | Fast, Normal |
| Memory Slots: | Two 240-pin DDR2 DIMM Slots Regular Unbuffered Memory to 2GB Total Two 184-pin DDR DIMM Slots Regular Unbuffered Memory to 2GB Total |
| Expansion Slots: | 1 - PCIe X16 (X4 GPU) 1 - AGP 3.0 (4x or 8x) 4 - PCI Slots 2.3 |
| Onboard SATA/RAID: | 2 SATA 1.5Gbps Ports - VIA 8237A (RAID 0,1,JBOD) |
| Onboard IDE: | 2 Standard ATA133/100/66/33 Port (4 drives) VIA 8237A |
| Onboard USB 2.0/IEEE-1394: | 8 USB 2.0 Ports - 4 I/O Panel 4 Headers No Firewire Support |
| Onboard LAN: | 10/100 FAST Ethernet Controller VIA VT6103 |
| Onboard Audio: | Realtek ALC888 HD-Audio 8-channel CODEC |
| Power Connectors: | ATX 20-pin, 4-Pin 12V Molex |
| I/O Panel: | 1 x Serial 1 x LPT 1 x PS/2 Keyboard 1 x PS/2 Mouse 1 x RJ45 4 x USB 2.0/1.1 8-Channel Audio I/O |
| BIOS Revision: | AMI 1.3 |
The ASRock 775Dual-VSTA is a very unusual board at a low entry price of $55. It is true that ASRock sometimes marches to the beat of different drummer, and the 775Dual-VSTA is certainly evidence of that. If nothing else, you can say they offer some very uniquely configured boards that offer very good quality for the money. This board features the VIA PT880 Pro Northbridge and VT8237A Southbridge with VRM and BIOS updates that now fully support Core 2 Duo. This is a board that you really want to dislike from a performance viewpoint, but you have to like it from an upgradeability perspective. Well, at least for those users who want to bring along their DDR and AGP cards while buying an E6300 CPU as an example.
 |
| Click to enlarge |
The board is laid out nicely and certainly caters to those who value IDE and PCI devices. The VT8237A only supports two SATA 1.5Gbps drives but the board does support four IDE devices. The overall feature set of the VIA chipset is the same as the Biostar PT880 Pro board we reviewed a few months back.
Basic Performance
The performance was not as bad with a Core 2 Duo as we had expected. In fact, in almost all of our benchmarks the board was at least in shouting distance of the other contestants. We actually found the DDR2 memory performance to be very competitive with the other boards, although support is limited to DDR2-533 and DDR2-667. We just received an updated BIOS that allows greater DDR support and improved timings. We will provide these performance results when we compare the board to an Intel 865 based board that supports Core 2 Duo in the near future.
The other potential issue is a PCIe graphics slot that only supports X4 operation. This proved to be an issue in benchmarks that tend to stress the GPU interface. Although ASRock only lists official PCIe support for video cards such as the NVIDIA 6600/6800GT or ATI X700 range, we had no difficulties running our ATI X1900XTX or EVGA 7900GTX in the board - though we never quite trusted it due to power delivery concerns. The board on a couple of occasions while overclocking completed a brown out while either GPU was being stressed in 3DMark06. In the end, you are paying around $55 for a board that can handle your older or newest peripherals and still provide a decent level of performance. We have to hand it to ASRock on fulfilling these requirements with a stable board, but we look forward to their Intel based value boards which should be arriving shortly.
Overclocking
| ASRock 775Dual-VSTA Overclocking Testbed |
|
| Processor: | Intel Core 2 Duo E6700 Dual Core, 2.67GHz, 4MB Unified Cache 1066FSB, 10x Multiplier |
| CPU Voltage: | 1.300V |
| Cooling: | Tuniq Tower 120 Air Cooling |
| Power Supply: | OCZ GameXStream 700W |
| Memory: | Corsair Twin2X2048-PC2-8500C5 (2x1GB) (Micron Memory Chips) |
| Hard Drive | Hitachi 250GB 7200RPM SATA2 16MB Cache |
| Maximum OC: (Standard Ratio) |
297x10 (3-3-3-9) 2970MHz (+11%) |
We did not expect much in the way of overclocking with this board and this is about what we got. However, the board did overclock further than we expected - a pleasant surprise - and we almost reached the 300FSB level with our test components. The board actually reached a 303FSB setting with an NVIDIA 6800 Ultra AGP card and some inexpensive DDR 333 memory. However, anything higher resulted in a no boot condition and clearing of the CMOS. In the end, you get what you pay for, although sometimes there is a surprise in the box of chocolates. We were surprised by this board, first for its ability to operate fine with a Core 2 Duo, and secondly that the general performance of the board was actually very good overall considering its heritage. It was kind of slow at times, but it still managed to consistently finish the race.
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Beaner - Wednesday, July 19, 2006 - link
Very well-written article guys!Thanks for taking the time to enlighten us all.
Just wanted to point out that the Mushkin Redline sticks can be had right now for $355 AR. At that price, I may just have to grab 'em myself!
ChronoReverse - Wednesday, July 19, 2006 - link
It was pretty much shown that the effect of using memory dividers for Athlon64's was rather minimal while most dividers were more adverse for Netburst.How large of an effect does using memory dividers have on the Conroe?
Wesley Fink - Wednesday, July 19, 2006 - link
The effect of memory dividers is much smaller on Conroe than we saw on Netburst. In fact memory dividers on Conroe behave more like AM2 - probably the result of the "apparent" reduction in latency with the intelligent look-ahead in memory. Core 2 Duo is not Hyper-Transport, so 1:1 (533) tis still theoretically the highest performing setting, but we were hard pressed to find any measurable advantage of 1:1 in most situations.We had tested a number of high-performance dimms on Conroe before we wrote the Buyers Guide, but there just wasn't the time - or room - to include full memory performance data in the Guide. We do have memory reviews in process that will provide specifics to your questions.
We can summarize what we have learned about memory on Conroe so far. DDR2-667 is quite a bit higher in real perfomance than DDR2-400 or DDR2-533 (1:1). We would consider DDR2 to be the minimum memory that should be used with Conroe. Going up from DDR2-667 we found the following - from fastest to DDR2-667. DDR2-1067 4-4-4 is a bit faster than DDR2-800 3-3-3 is a bit faster than DDR2-667 3-2-3. Timings are very important above DDR2-667 and you can give up any performance advantage with slower timings. DDR2-667 is a good match to COnroe bandwidth, and is better perfoming than 533 or 400 by a wider marging than you find above DDR2-667. It also appears Conroe responds better (performs better with increases) to DDR2 bandwidth increases than either Netburst or AM2.
Wesley Fink - Wednesday, July 19, 2006 - link
We would consider DDR2-667 the minimum memory to use with Conroe, and faster timings do generally improve performance.Sunrise089 - Wednesday, July 19, 2006 - link
I would like to know this as well.txt2000 - Wednesday, July 19, 2006 - link
Just wondering, if your going to spend ~$400 on memory if you would be better off with 4GB value DDR or 2GB high performance.Patsoe - Wednesday, July 19, 2006 - link
I suppose that completely depends on your usage pattern. Almost all of my activities fit within 512MB, and probably anything I do fits within 768MB. So getting faster RAM would do more for me than more of it.If you could fill 3GB, then a setup with 2GB will see a lot hard-disk swapping... even a very slow 4GB of RAM will do better in that case.
Andy4504 - Wednesday, July 19, 2006 - link
Anything over 1GB results in the OS addressing your memory differently. Never did the reasearch on how that different addressing affected system performance however.supremelaw - Wednesday, July 19, 2006 - link
http://www.anandtech.com/mb/showdoc.aspx?i=2797&am...">http://www.anandtech.com/mb/showdoc.aspx?i=2797&am...Timing and content were perfect for this article.
And, your earlier article on the nVidia 590 chipset
for Intel also dovetails perfectly: nice photos too.
August+ should be VERY interesting.
Many thanks!
Sincerely yours,
/s/ Paul Andrew Mitchell
Webmaster, Supreme Law Library
http://www.supremelaw.org/">http://www.supremelaw.org/
mobutu - Wednesday, July 19, 2006 - link
"The board was very stable with our X6800 and X6600 Core 2 Duo processors ..."It should have been E6700 (or maybe E6700)