Hey people, I have captured some pix and did an initial benchmark on a 915PW chipset. The bandwidth of DDR2 is slightly lower than DDR400 speeds. Check it out:

Here are some additional screenies I got... not really that good in terms of performance but...


The onboard Intel Extreme 3 is quite capable. I used it to play Farcry at 800*600 with settings to medium still can get 20-85fps.

For startes do you know what UTT stands for? It stands for UnTesTed memory IC's. This means that after the IC's were packaged they were NOT speed binned and offer no ratings from the factory. This is done so DRAM manufacturers can cut 15 to 20 percent in costs per DRAM by skipping DRAM chip reliability burn-in and speed/functionality testing on high-end chip testers. Not only does this save money, but it also allows them to dump large volumes of IC's on the market faster because there is no testing done. Is this a good idea? For those looking to build systems that meet JEDEC specifications, it is bad news because the majority of these IC's are Non-Conforming (NC). For system builders or corporate builders these IC's are known to be bottom of the barrel and are something they wouldn't touch with a ten foot pole. This is why these UTT IC's come blank from the factory with nothing written on them as they are unrated. Below is an image of OCZ's PC-3200 Gold VX modules without the heatspreaders installed. Note the lack of any IC labeling from the manufactuer.

Legit Reviews

Actually UTT chips depends more on your luck and they are inconsistent. Some might overclock very well and some might not overclock at all. Moreover, you need a motherboard capable of putting out atleast 3.5VDIMM to power up the UTT chips. Even with DDR Booster, the max you can go is about 3.4V, which is still not enough for UTT. Only motherboards such as DFI LAN Party NF4 is capable of putting out more than 3.5V.

Performance wise, UTT offers great performance because it was tested to do 2-2-2 timings on high MHz. Well, you can't actually compare UTT with normal value RAM because UTT is has a slightly better "standard" than normal RAMs.

Since the truth is reveiled, I guess the price for UTT chips will drop close to normal Value RAMs you can find in the market.

But if you can buy a pair of UnTesTed RAM with lifetime warranty, I think you should go for it! Provided you have the proper setup of cause!

Yeah... but you will have better luck with products from Mushkin, OCZ, Corsair and so on. These companies actually test the UTT chips before marketing them.

Info (Nice to knw)



*Only list some of the manufacturer which using UTT chips


+++ Buffalo PC3200 +++
- Winbond UTT BH-5
- Winbond UTT CH-5


+++ GeIL Ultra Platinum PC3500 +++
- Winbond UTT BH-5

+++ GeIL Ultra-X PC3200 +++
- Winbond UTT BH-5

+++ GeIL Value PC3200 Blue +++
- Winbond UTT BH-5


+++ Gskill PC3200 F1-3200BWU2-512MBGH/1GBGH +++
- Winbond UTT BH-5


+++ Kingston Value Ram 400Mhz KVR400X64C25 +++
- Winbond UTT BH-5
- Winbond UTT CH-5


+++ Mushkin PC3200 Blue CL2 +++
- Winbond UTT BH-5
- Winbond UTT CH-5


+++ OC-Wear PC3200 WB BH 5ns +++
- Winbond UTT BH-5


+++ OCZ DDR PC-3200 Value Winbond Series +++
- Winbond UTT CH-5

+++ OCZ EL DDR PC3200 Gold Edition +++
- Winbond UTT BH-5

+++ OCZ EL DDR PC3200 Gold Edition VX +++
- Winbond UTT CH-5

+++ OCZ EL DDR PC4000 Gold Edition VX +++
- OCZ EL DDR PC4000 Gold Edition VX


+++ Twinmos / TwinMOS DDR400 +++
- Winbond UTT BH-5
- Winbond UTT CH-5

+++ Twinmos M.tec DDR400 +++
- Winbond UTT BH-5
- Winbond UTT CH-5

+++ Twinmos Speed Premium DDR400 +++
- Winbond UTT CH-5

+++ Twinmos Speed Premium DDR433 +++
- Winbond UTT BH-5

+++ Twinmos Twinmos Ram /w Sticker ending: 1A4T +++
- Winbond UTT BH-5

+++ Twinmos Twinmos Ram /w Sticker ending: AA4T +++
- Winbond UTT CH-5

+++ Twinmos Twister BH-5 DDR400 +++
- Winbond UTT BH-5

Which one is yours? Click Me More Info

I used Geil Value 3200 Blue before,but not very sure about the chip.I only managed to get it clock at FSB235 (3-8-4-4) 2.8v.I changed it with my friend for a hynix D43

ETT & UTT Memory IC's Explained

Check out my "little" review of DDR2 vs DDR1.
http://www.pcmoddingmy.com/content.php?review.156.4

My conclusion was DDR2 was better than DDR1 at memory benchmarks. But DDR1 showed better results in gaming benchmarks.

The biggest benifit of DDR2 is that it runs at lower voltage and faster. Overclocking with DDR2 is easy and users will need no more than 2.2V or 2.3V to unleash the potential. For me, a RAM that runs faster at lower voltage is a winner.

But anyways, DDR2 is purely made for overclocking and wait till AMD comes with their DDR2 based platform. Oh, by then Intel will be moving to DDR3 already

So basically DDR2 is good when we overclock so we can push down the heat and keep stability? Hmm...

Compromises between timing and clock speed

First of all, FSB or HTT has nothing to do with timing. The timing is for RAM only.


What's the benefit of low timing?
- memory controller can access the RAM chip faster
- It can access small and random data at faster rate.
- Hence, u can feel the responsiveness and smoothness when timing is lowered.

What's the benefit of high bandwidth (high clock speed).
- high bandwidth enabled more data to transfer to and from CPU in 1 second.
- benefit when dealing with big size data.


What software is better for low timing / high bandwidth
- eg. DDR600 at 3-4-4-8.
- The initial response might be a bit slow, due to high timing.
- However, once the RAM is accessed, the high bandwidth allows massive data transfer.
- Programs like Winzip doesnt randomly access the RAM too much.
- So once the RAM is accessed, the memory bandwidth is more important to complete the task quickly.
- Programs like MS words deal with very small piece of data.
- Hence lower timing has better benefit, bcoz it can access the data quickly.


What's the relation between timing and bandwidth

* note: this is js a rough estimation.

- eg. DDR400 2-3-3-7. <-- has CAS latency of 2.
"2" means the delay measured in clock cycles. So, at 200MHz, 2 Hz is wasted to 'wait' for CAS.

- The actual time delay per clock = 1/200MHz = 5 nanosecond (ns). When 2 Hz is wasted, that means the memory controller have to wait 2(5 ns) = 10ns to access the Column (CAS).

- Hence, the time delay is closely related to clock speed.

- Bandwidth also related to clock speed, with the formula (N-bit / 8) x clock speed

- Therefore, time delay is related to bandwidth.

- DDR400 (200MHz) with CL2.0 has the same CAS delay as DDR600 (300MHz) with CL3.0.

calculation:
1/200MHz x 2 = 10ns.
1/300MHz x 3 = 10ns.