Value RAM Roundup: Computing On a Budget
by Wesley Fink on April 11, 2005 4:26 PM EST- Posted in
- Memory
Performance Test Configuration
All seven Value RAM memories were tested on the DFI LANParty nF4 SLI-DR used in our most recent memory reviews. nForce4 is PCI Express, so we used the PCIe version of our standard nVidia 6800 Ultra for testing. Other components remain the same as used in the memory setup in Athlon 64 Memory: Rewriting the Rules. Performance was compared to the 5 top performing memories tested on this same platform in OCZ VX Revisited: DDR Updates on DFI nForce4 and Patriot DDR400 2-2-2/DDR533 3-4-4: Performance AND Value.The A64 test bed includes components that have been proven in Socket 939 Athlon 64 benchmarking, such as the Socket 939 4000+ (same specifications as FX53), and the OCZ Power Stream 520 Power Supply. Since the Athlon 64 tests represent a new series of DDR testing, we are using the current generation nVidia 6800 Ultra video card for benchmarking. We have found the 6800 Ultra to be a particularly good performance match to nVidia motherboards.
All other basic test conditions attempted to mirror those used in our earlier Intel memory reviews. However, test results are not directly comparable to tests performed on the Intel test bed.
| AMD nForce4 Performance Test Configuration | |
| Processor(s): | AMD 4000+ (FX53) Athlon 64 (2.4GHz, Socket 939, 1 MB cache, Dual Channel, 1000HT) |
| RAM: | Kingston KVR400X64C25/512 (DS) 2X512MB Kingston KVR400X64C3AK2/1G (DS) 2X512MB Mushkin PC3200 EM (DS) 2X512MB OCZ PC3200 Value Series (VX) (DS) 2X512MB OCZ PC3200 Gold (BH5) (DS) 2X512MB OCZ PC3200 Premier (DS) 2X512MB Transcend JM366D643A-50 (DS) 2X512MB Patriot PC3200+XLBT (DS) 2X512MB OCZ EL PC4000 VX Gold (DS) 2X512MB Corsair TwinX1024-4400C25 (DS) 2X512MB Crucial Ballistix (DS) 2X512MB OCZ PC3200 Platinum Rev 2 (DS) 2X512MB |
| Hard Drives: | Seagate 120GB SATA 7200RPM 8MB Cache |
| PCI/AGP Speed: | Fixed at 33/66 |
| Bus Master Drivers: | nVidia nForce Platform Driver 6.39 |
| Video Card(s): | nVidia 6800 Ultra 256MB PCIe, 256MB aperture, 1024x768x32 |
| Video Drivers: | nVidia Forceware 71.84 Release |
| Power Supply: | OCZ Power Stream 520W |
| Operating System(s): | Windows XP Professional SP1 |
| Motherboard: | DFI LANParty nF4 SLI-DR |
| BIOS: | 3/10/2005 Release |
In past benchmarking, we have found performance of the nForce4 and nForce3 chipsets to be virtually identical, and we have found AGP and PCIe performance to be virtually the same in the benchmarks that we use for memory testing. Therefore, you can also compare these results to TCCD benchmarks in recent memory reviews. The differences in results are that the nVidia 71.84 driver is a bit faster than the 61.77 used in earlier memory review. The DFI nForce4 platform is also a bit better at memory overclocking than the MSI K8N Neo2 used in past memory testing. The performance differences, however, are not large enough to negate performance comparisons.
With nForce3 motherboards, we achieved the fastest performance on AMD Athlon 64 chipsets (nForce3, VIA K8T800 PRO) at Cycle Time or tRAS of 10. However, the nForce4 appears to behave a bit differently with memory. Therefore, we ran a complete set of Memtest86 benchmarks with only tRAS varied to determine the best tRAS setting for these memories. We achieved the best bandwidth at tRAS settings ranging from 5 to 8, so a tRAS setting of 6 was used for testing wherever possible.
Test Settings
All AMD Athlon 64 processors are unlocked downward, and the FX CPUs are unlocked up and down. This feature allows a different approach to memory testing, which truly measures performance differences in memory speed alone. All tests were run with CPU speed as close to the specified 2.4GHz of the 4000+/FX53 as possible, with CPU speed/Memory Speed increased at lower multipliers to achieve 2.4Ghz. This approach allows the true measurement of the impact of higher memory speed and timings on performance, since CPU speed is fixed, removing CPU speed as a factor in memory performance.The following settings were tested with the seven Value RAM memories on the DFI nF4 test bed:
- 2.4GHz-12x200/DDR400 - the highest stock memory speed supported on VIA 939/nF3-4/SiS755-FX motherboards.
- 2.4GHz-11x218/DDR436 - a ratio near the standard DDR433 speed
- 2.4GHz-10x240/DDR480 - a ratio near the standard rating of DDR466. Several of the Value Memories achieved stable performance at this speed and complete benchmarks were run at this speed with those memories.
- Highest Memory Performance - the highest memory bandwidth and game performance that we could achieve with the memory being tested. This is rarely the highest memory speed that we could achieve. It is normally a lower speed with 1T Command Rate and tighter memory timings.
We ran our standard suite of memory performance benchmarks - Quake 3, Return to Castle Wolfenstein-Enemy Territory-Radar, Super Pi 2M, and Sandra 2004 Standard and UnBuffered. We also included Everest Home Edition memory tests, free at www.lavalys.com, for read speed, write speed, and Latency.
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Wesley Fink - Tuesday, April 12, 2005 - link
xsilver -PLEASE read my Final Words. I made a very clear distinction between Value RAM for normal motherboards and Value RAM for Mad Overcockers. If I take your approach then it assumes there are no overclockers who buy a cheap motherboard, or a DFI nF4 Ultra for $134, and use cheap ram they push to the limit. I assure you there are lots of overclockers who push cheap ram to the limits, and who are looking for some great overclocking RAM at a cheap price. YOUR definition of Value is just one of many and we talk about this in depth on page 2.
Most really cheap motherboards in the Value category have no adjustments at all for memory voltage, so I should logically only test at 2.5V or 2.6V using your approach. We are testing what this Value RAM can do with a consistent test bed.
As for the 6800 Ultra and DFI, they were ONLY used so we could compare results to many of the high-end RAM we have recently tested - to keep the test bed consistent. I can imagine the uproar if I had tested with a 6200 and then listed past results with our 6800 Ultra test bed. We are not suggesting a Value System USE a 6800 Ultra, it is merely to have a consistent test bed.
Wesley Fink - Tuesday, April 12, 2005 - link
#40 - You are correct about overhead with Super Pi, but since we use a consistent test platform to test memory the Super Pi results can be accurately compared with each other.Your approach to running Super Pi in a RAMdisk is interesting, and should remove some barriers to broader comparison of CPUs and platforms.
xsilver - Tuesday, April 12, 2005 - link
cygniI've been reading anandtech since 1999
and from that time there have been very few instances where CLEAR errors have been made.... I am afraid though this is one of them. I was trying to make a point that it is dissapointing as it is the first review right after anand did his whole spiel about integrity of reviews
about corsair not co-operating... how about source the memory from somewhere else? newegg or other stores would be happy to oblige (they are a major sponsor... and you only need to borrow the ram)
its just sad when corsair smells that you're doing a roundup and they know they could possibly look bad, so therefore they decide not to submit anything for review
I mean imagine if there was a whole nvidia and ati shootout and one team know beforehand that they would lose... and they refuse to submit a card.... would people hear about if the card performs bad? or how companies are trying to do a shifty? people would be all over the forums spewing froth from their mouths!!!
I consider anandtech the best tech website out there and in efforts to making it better I offer constructive criticisms... I don't know where the "All these "anand must be embarrased" posts every time are getting FREAKING OLD""
is coming from but its the first that i've heard of it......
and I don't know how to make it any clearer but this was a VALUE roundup right? who in their right mind would spend craploads of money on a dfi nforce4 + 6800ultra and get VALUE ram? .... I'm not saying you can't use good hardware.... just dont push it to 3.4 damn volts!!!!!
Wesley Fink - Tuesday, April 12, 2005 - link
#36 - On the AMD Athlon 64, there is no FSB since everything is derived from the HT bus. You are therfore correct that lowering the ram multiplier and running at DDR400 at a higher CPU speed makes little difference on the A64 platform. There are, however, two concerns with this approach:1) There is an Asynchronous Latency penalty, which can be tweaked somewhat on boards with better BIOS options like the DFI. It is not, hoever, the kind of asynchronous penalty you see on a FSB board like Intel.
2) RAM multipliers are usually limited. If you have a standard set of 400, 320, and 266 speeds, you could only achieve DDR400 speed at a CPU frequency of 250. Anything lower than that would be running the RAM at less than 400. Most A64 CPUs can't do 250 on air at stock multipliers (the low end ones can) so they will be running less than optimum ram speed. That's where you could lower CPU multipliers or use a board like the DFI with lots of intermediate RAM ratios.
In the end, overclocking on the AMD is a balancing act with more variables than the simpler FSB platforms. You are balancing LDT (the HyperTransport Multiplier which controls HT speed), CPU frequency, and RAM frequency to find the best mix for performance. You also have all the different memory controllers since they are on the CPU.
In my experience there are not any simple rules for this, except faster values usually perform better than slower on the same variable. In other words, the easiest way to consistently improve memory performance is 1:1 memory speed.
AnnihilatorX - Tuesday, April 12, 2005 - link
Replying #29 Wesley FinkThat's exactly a Gold series but NOT value series.
Based on part number OCZ4001024WV3DC-K
http://www.atacom.com/program/print_html_new.cgi?&...
is the right one.
See the reply below
Replying #21 dvinnen
I asked some other people on other forums. I've post some info on anandtech forum
http://forums.anandtech.com/messageview.aspx?catid...
highlandsun - Tuesday, April 12, 2005 - link
Just a tiny point, I see this misperception all over - Super Pi is not a pure number crunching program. It writes huge sets of temporary files to disk and reads them back between loop iterations. A lot of people quote Super Pi times and assume they're all reasonably comparable measures of CPU+memory performance, but they're overlooking the fact that there's a significant chunk of I/O in there too, so disk type and filesystem state (fragmentation, etc.) will also impact the timing results.If you can install a ~128MB RAMdisk and run from there, then you can be sure that you're only measuring CPU+memory with Super Pi. (Then of course, the performance will depend on how good the RAMdisk's block memory move implementation is. But if you use the same version for all tests, you'll get consistent, comparable results.)
ChineseDemocracyGNR - Tuesday, April 12, 2005 - link
It's been mentioned "if you don't overclock..."You don't need expensive RAM to overclock the Athlon 64. On this platform the memory is always running on a divider, there's no performance penalty from overclocking the processor by increasing the reference clock but keeping the memory happy at DDR400.
As for the $195 "Value" RAM, I wouldn't recommend it. Save $100 and get a more powerful video card or whatever else your system needs. This money could mean an upgrade from a GeForce 6200 to a 6600GT, or from a 6600GT to a X800XL; there's no RAM that makes up for that.
You can achieve the same overclock on your processor with DDR400 RAM that doesn't like to be overclocked!
I know this article was a lot of work, but I think it would be a good idea to have at least one other test platform. The DFI LP nF4 is known to be... "special" when it comes to memory compatibility. The results could be (and probably would be) very different on another board, like the more value-oriented nForce4 or K8T890 boards that would fit in better with this article. Heck, I think even the DFI NF4-DAGF would be a different story.
Cygni - Tuesday, April 12, 2005 - link
xsilver1) ALL reviews work this way. You think Autoweek BUYS the cars they review? You think PC Gamer BUYS the games they review? Anandtech asked for samples, and was given them. Or they are given to AnandTech to promote the product. That is how hardware reviews / review sites WORK.
2) They were pushing the RAM to the absolute limits, which meant using voltages not available on most baords. Big deal! They also noted performance at each different speed setting, so even if your board doesnt have that voltage, they STILL had you covered.
All these "anand must be embarrased" posts every time are getting FREAKING OLD. If you HONESTLY think that, there is NO WAY you have been here for more than a few months. Let alone years.
Googer
RTFA, and RTFC. For the love of christ...
Googer - Tuesday, April 12, 2005 - link
How can you do an article like this and NOT benchmark the KING of ALL Value RAM- Crucial?cryptonomicon - Tuesday, April 12, 2005 - link
hmm I asked last review and I received I suppose...>> FINALLY << a comparison against BH5.. and by coincidence I'ts amazing that they are producing some, however it is just from those old dies lying around.as a side note, wth happened to kingston and mushkin. their stuff only hit 204mhz??? what a joke.
:spelling corrections:
"OCZ PC3200 Gold is sold as a 1 GB kit with two 412MB DIMMs at a price of about $195. "
-change to 512mb