Whats the diff between SDRam and DDRam.
Hi -]OS[- Flying Fool,
Whats the diff between SDRam and DDRam.
I will run through this quickly cause I have done it before several times before on the forums.
DDR is actually correctly called DDR SDRAM, which stands for Double Data Rate Synchronous Dynamic Random Access Memory, whereas SDRAM is of course Synchronous Dynamic Random Access Memory, so while they are both SDRAM, to differentiate the names and make it simpler for buyers one is just called DDR, the other SDRAM.
The double data rate means that the memory can transfer data on the rising AND falling clock cycle of the memory bus, while standard SDRAM can only transfer data on the rising clock cycle of the memory bus, so for a given bus speed DDR SDRAM can transfer twice the amount of data as SDRAM. There are probably things here that you don't understand, such as what I mean by the rising and falling clock cycle of the memory bus, but I am not going into that right now cause it would take too long. RDRAM used by P4's (not so much now of course) used a similar system, only that memory was able to transfer 4 times as much data as SDRAM for a given bus speed. New DDR memory coming out soon will be Quad Pumped and will have a similar ability and will probably be called QDDR.
Keep in mind that DDR memory requires a motherboard specifically designed for it, it has different cutouts so that you can't actually plug DDR into an SDRAM mobo and vice versa. There are also different speed DDR memory, PC1600, PC2100, PC2700, PC3200 and these relate to the bus speed of the mobo, so a 400Mhz FSB Mobo would be able to use PC3200 DDR at full speed, whereas a 333Mhz Mobo would still be able to use PC3200, but not at full speed, PC2700 would do just as good, so save some money and only buy memory that matches your FSB speed.
And of course we have all heard about Dual Channel Mobo's? (Nforce2 Chipset), These use standard DDR mem but are specially designed to access the memory as fast as possible and require two sticks of memory to function to max potential, using the memory in a strobe like setup, while one stick is recharging the other is being accessed, while on standard Mobo's all memory sticks recharge at the same time. Dual Channel Mobo's reduce the memory latency time and give better performance.
Hope all this helps and is not too confusing
:cya: :cya: :cya:
Thanks thats exactly what I was looking for.
20th October 2002
My specs are below.
But I am getting ready to switch MoBos. Here's the two I have my eyes on.
DFI Motherboard for Intel Processors,"LAN Party" Model PRO875 Retail Intel® 875P CANTERWOOD Chipset Specifications: LANPARTY Supported CPU:Socket 478 Pentium 4 Processors Chipset:Intel 875P / ICH5R FSB:400/533/800 (HT) RAM:Dual Channel DDR 400 IDE:Dual Channel IDE up to 4 Devices RAID: HighPoint 372N RAID 0, 1, 0+1 and 1.5 SATA: 2 Serial ATA channels. Slots:1x AGP8X, 5 PCI 32-bit Slots Ports:2xPS2,2xCOM,1xLPT,1xRJ45,4xUSB and Audio Ports Onboard Audio:20-bit stereo full-duplex codec with independent variable sampling rate Onboard LAN:Intel Gigabit CSA LAN 1000Mbs Special Feature: RAID1.5 DUAL LAN Genie BIOS, Live Update, UV Sensitive, Round Corner PCB Package comes w/ PC Transpo, FronTX and WinDVD SW
Intel Pentium 4 (800 FSB) Motherboard Model D875PBZLK Retail Specifications: CPU:Supports Intel Pentium 4 processor with a 400/533/800MHz (mPGA478-pin)Supports Hyper-threading Chipset: Intel 875P IDE:2x IDE with Ultra DMA 33 and ATA-66/100 support RAM:2x 184-pin DIMM connect, Double Data Rate DDR266/DDR333/DDR400 support Slots:1 x AGP 8X, and 5 x PCI Ports:2xPS2, 4x USB, Onboard SATA:2 Onboard LAN: Gigabit 10/100/1000 Intregrated
They can be found at www.newegg.com
I have a 1.7 Ghz Celeron , 512 MB RAM 120 GB of HDD and a Radeon 9200 SE .I am satisfied with my pc now.It ran LOTR Battle For MIddle Earth great.
If you want a P4 pc get a Pentium 4 with HT technology , a 80 GB of HDD(or 2x 80 GB HDD) a good graphics card such as the Radeon 9600 or the 9800 series or even a radeon X800 , and at least 512 MB of RAM.You can upgrade your memory later to 1 GB.
mine: ASUS P4B Motherboard 1.7Ghz Intel Pentium 4 Processor 1280MBs SDRAM PC-133 40GB 5400rpm ATA133 HDD 120GB 7200rpm ATA133 HDD Radeon 9600XT 256MBs
soon to be: ASUS A8N-SLi Motherboard AMD Athlon 3500+ or AMD Athlon 3200+ Processor 1024MBs RAM, PC3200 or 4000, not sure yet 120GB 7200rpm ATA133 HDD GeForce 6600GT
now... that second part is what im aiming to get, whether or not i get it i dont no, but thats what i hope, i would really like a 3500+ but its sorta lookin like a 3200+, both Skt939 of course so there still good processors, but thats what i hope to get, so for me lookin at both specs im goin to be undergoing a HUGE upgrade
ok i asked this before in some other topic, but noone answered - what gfx card is the best for the games like bf1942, bf2, doom 3 <---(ok i just want to play it without lag, not on the best video quality), gta san andreas, but not too expensive? i give max $166 for it, so plz tell me what to buy... i'm thinking about geforce 6200 (it's $166 here in Slovenia), but plz tell me if there's any better gfx card for the same price? well my specs are: celeron 900mhz 256ram (i dunno, ddr or what, my brother bought the comp...) geforce2 32mb :uhoh: 40gb hdd and i'm having loads of lag in bf42... :uhm: