Value RAM Roundup: Computing On a Budget
by Wesley Fink on April 11, 2005 4:26 PM EST- Posted in
- Memory
Kingston KVR400X64C25/512
Kingston is the world's largest independent Memory manufacturer with annual sales over $2.4 Billion. Kingston is a very well-known memory brand, and it can be found at almost any large computer dealer. Kingston has a very complete line of memory products from the cheapest Value RAM to their enthusiast HyperX products. Kingston is also a brand that you will often see on sale at the big computer chains.
Specifications
The KVR400X64C25/512 is rated at CAS 2.5. Kingston supplied two Value RAM samples for testing - this CAS 2.5 and a lower cost Value RAM rated at CAS 3.| Kingston KVR400X64C25/512 (DDR400) Memory Specifications | |
| Number of DIMMs & Banks | 2 DS |
| DIMM Size Total Memory |
512 MB 1GB |
| Rated Timings | 2.5-3-3 at DDR400 |
| SPD (Auto) Timings | 2.5-3-3-8 |
| Rated Voltage | 2.6V |
Test Results
| Kingston KVR400X64C25/512 (DDR400) - 2 x 512Mb Double-Bank | |||||||
| CPU Ratio at 2.4GHz | Memory Speed |
Memory Timings & Voltage |
Quake3 fps |
Sandra UNBuffered | Sandra Standard Buffered |
Super PI 2M places (time in sec) |
Wolfenstein - Radar - Enemy Territory fps |
| 12x200 | 400 DDR | 2.5-3-2-6 2.6V 1T |
533.0 | INT 2470 FLT 2642 |
INT 6016 FLT 5987 |
83 | 112.0 |
| 12x204 (2.45GHz) |
Highest CPU/Mem Performance | 2.5-3-3-6 2.7V 1T |
533.2 | INT 2636 FLT 2797 |
INT 6143 FLT 6112 |
81 | 112.4 |
We haven't made a mistake here. As you can see, there is really no overclocking headroom at all with this Kingston 2.5 memory. While it actually outperforms specs with 2.5-3-2-6- timings at DDR400 at stock 2.6V, we could not complete our memory benchmarks above a 204 CPU setting. Super Pi and Unbuffered Memory tests worked fine to almost DDR480, but at any setting above 204 (DDR408), games would freeze or run in spurts and freezes. This points to a likely conflict with the AMD on-chip memory controller or the DFI nF4 motherboard, and in fact, the Kingston 2.5 may reach much high memory speeds on an Intel platform.
We have found Aida 32 to be very useful in examining read/write performance and memory latency. Aida 32 is now available as Everest Home Edition, a free download from www.lavalys.com.
| Kingston KVR400X64C25/512 (DDR400) 2x512Mb Double-Bank Everest 1.51 |
|||||
| CPU Ratio at 2.4GHz | Memory Speed | Memory Timings & Voltage |
Everest READ MB/s |
Everest WRITE MB/s |
Everest Latency ns |
| 12x200 | 400 DDR | 2.5-3-2-6 2.6V 1T |
5800 | 1918 | 47.3 |
| 12x204 (2.45GHz) |
Highest CPU/Mem Performance | 2.5-3-3-6 2.6V 1T |
5855 | 1991 | 46.9 |
The Memory Speed range was so limited with the Kingston CAS 2.5 that there is really little on which to comment. However, despite the problems above 204 on the Athlon 64, at stock DDR400, the Kingston KVR400X64C25/512 performed without any problems.
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shoRunner - Monday, April 11, 2005 - link
when did value ram cost $200 for a gig...dvinnen - Monday, April 11, 2005 - link
Anyone else finding these Value VX moduals? The link above timeings are 3-4-4-8, not 2.5-3-3-7.JarredWalton - Monday, April 11, 2005 - link
Please remember that it is rarely feasible for reviewers/sites to go out and buy all the hardware for a roundup. Wes submitted requests to several manufacturers, and this is what *they* felt like sending for testing. Of particular note is the comments from Corsair - they are not alone in rotating chip types on their value RAM. Maybe that is why several companies (i.e. Mushkin) didn't simply send their cheapest RAM.Looking around at various resellers and the pricing Engine, there are quite a few other RAM manufacturers/models out there worth considering. Corsair, Crucial, PDP, PQI, G.Skill, and several others have some really good RAM at $150 or less. You can even find PC4000 rated RAM for around $160 now.
Trust me, it's not practical to try to do a roundup of ALL value RAM. There are just so many models out there, all with different performance characteristics. If you don't want to overclock (at all), most of the $90 to $120 RAM will work well.
We should also have a "Your Mileage May Vary" clause in the article, as what Wes achieved is by no means a scientific sampling of each product. That would require at least 10 samples of each, and when you take the amount of time required to test OC'ing on *one* DIMM setup, it would take months to complete a scientific sampling of RAM.
reactor - Monday, April 11, 2005 - link
quite right tony, was well done and hope to see further editions of the article. paying less and getting more is always good :)bigtoe36 - Monday, April 11, 2005 - link
Typos's..."seem" is seen, "we" is were...se we all make mistakes.bigtoe36 - Monday, April 11, 2005 - link
VX runs well with 2-3-2 timings with lower voltage. I have seem 233fsb 2-3-2 at 2.8V or so which is a little faster than 2.5-3-3 at the same fsb ;-).Regarding the modules that we not tested, you have to remember there are hundreds of different types of ram, not all can be reviewed in one go, I suspect this review alone took quite some time to complete as the AT LABs are a real busy place...i know Wesley is VERY busy not only reviewing but also pushing manufacturers to get boards overclocking better and pushing the enthusiast movent forward.
If only you guys had any idea of what Wes has done for the enthusiast over the past 2 years, i do and please take it from me the boards you are seeing at the moment are the fruits of that work.
Well done Wesley, nice review as always, even with the odd typo in amoungst the 8K words you wrote ;-)
bobsmith1492 - Monday, April 11, 2005 - link
Well, anyway, what about the decent Mushkin CAS 2.5 for $84? It seems like a much better deal than the one they tested.http://www.newegg.com/app/ViewProductDesc.asp?desc...
reactor - Monday, April 11, 2005 - link
wouldve like to have seen mushkin blue line and twinmos tmii400, both are supposed to be good comptetitors to the Value VX/BH from OCZ.Cygni - Monday, April 11, 2005 - link
They reviewed Value ram from the MAJOR mfts, they didnt review no name or OEM pieces, just brand name retail stuff.bobsmith1492 - Monday, April 11, 2005 - link
Who picked these.... :(What about the V-data 3200 CAS 2.5 ram for $70/gig at Newegg or the Mushkin CAS 2.5 for ~80? The ones in the review seem more expensive for slower ratings than most of the stuff at Newegg.
That said, the $115 VX value sounds pretty sweet.