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Showing results for tags 'unused RAM still counts'.
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I got that Packard Bell laptop from a friend, which was going to bin it because it was making an awfull noise (I solved that in 3minutes). Nice screen, 1440 x 900, annoying keyboard (or is it because it needs the screws back on?). Anyway... The thing, that is not listed on Packard Bell's site (Easynote SW51-204) has an nvidia chipset. It had 2x 512 Meg installed. I test a 2Gig stick and it was seeing it all right. So I grabbed a bargain on eBay to put 2x2Gig DDR2-6400 in it. Unfortunately, the Bios as well as Windows7 only report 3Gig (Windows really says 4Gig but 2.87 usable because the graphic card uses 128Meg). So I replaced one stick by 1Gig DDR2-6400. Well... it then says the RAM is slower! I tried to swap the sticks but it's the same result. HW-Info tells the same story for all scenarios (2+2, 1+2 or 2+1); [General information] Total Memory Size: 4 GBytes Total Memory Size [MB]: 4096 [Current Performance Settings] Current Memory Clock: 320.7 MHz Current Timing (tCAS-tRCD-tRP-tRAS): 5.0-5-5-15 Memory Runs At: Dual-Channel Command Rate: 2T Write to Read Delay (tWR_RD) Same Rank (tWTR): 3T Write to Precharge Delay (tWTP): 16T Write Recovery Time (tWR): 5T Row Cycle Time (tRC): 21T Four Activate Window (tFAW): 13T[General information] Total Memory Size: 3 GBytes Total Memory Size [MB]: 3072[Current Performance Settings] Current Memory Clock: 320.7 MHz Current Timing (tCAS-tRCD-tRP-tRAS): 5.0-5-5-15 Memory Runs At: Dual-Channel Command Rate: 2T Write to Read Delay (tWR_RD) Same Rank (tWTR): 3T Write to Precharge Delay (tWTP): 16T Write Recovery Time (tWR): 5T Row Cycle Time (tRC): 21T Four Activate Window (tFAW): 13TStill, the "Benchmark" says 1800MB/s for 4Gig and 1596MB/s for 3Gig! Windows Performance index also gives less for RAM speed with 3Gig. Can someone explain that to me? I'm quite frustrated to loose a whole Gigabyte for 13% more speed. Is this a 100% hardware problem?( there is no Bios info/update that I can find).