How come RAM is taken away for video cards? Because of my videocard's VRAM?
Like I have 3 GB of RAM, but Windows show 2.5 GB. I was told because it
is a shared memory? :( Thank you in advance. :) -- "I've been on some fairways that are as good as the greens we putted on back then. We had crab grass. I remember one green where I putted through ants." --Sam Snead Note: A fixed width font (Courier, Monospace, etc.) is required to see this signature correctly. /\___/\ Ant(Dude) @ http://antfarm.ma.cx (Personal Web Site) / /\ /\ \ Ant's Quality Foraged Links: http://aqfl.net | |o o| | \ _ / If crediting, then use Ant nickname and AQFL URL/link. ( ) Chop ANT from its address if e-mailing privately. Ant is currently not listening to any songs on this computer. |
How come RAM is taken away for video cards? Because of my videocard's VRAM?
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256 Le 17/01/2016 10:31, Ant a écrit : Like I have 3 GB of RAM, but Windows show 2.5 GB. I was told because it is a shared memory? :( Thank you in advance. :) Are you sure it's not 4 GB of RAM, but Windows showing only 3.5 GB ? On a 32 bits system, some of the addressing space must be mapped to IO board... historically, the IO were mapped at the top of the 4GB address space (of the 32 bits), alas with 4GB memory being now available, that trick does not work... or rather still work too well, and then some memory cannot be used as such. Please describe your motherboard & CPU (name them at least), and your version of windows. And how you get the measurement. - -- Email to the Reply-To address will not be read. IQ of crossposters with FU: 100 / (number of groups) IQ of crossposters without FU: 100 / (1 + number of groups) IQ of multiposters: 100 / ( (number of groups) * (number of groups)) -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iJwEAQEIAAYFAladHyoACgkQhKAm8mTpkW31ZQP/baoas1OSD3MO5Z/PP0geZvRo tw2Jbl4klq59/9qI/xQkuV78fI/7bZOWlGkATEdKaPPtYL2dEW4NMoGbAVbzQND3 n+PT61hPGS6B44sXNr9M6rHltmT8CZfLLw2cIJPDfI1IrjgkKn bMtLZuaprQ/Vea nVIJr0x1Ex7GwhFFpjU= =NTMW -----END PGP SIGNATURE----- |
How come RAM is taken away for video cards? Because of my video card's VRAM?
Le Forgeron wrote:
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Le 17/01/2016 10:31, Ant a écrit : Like I have 3 GB of RAM, but Windows show 2.5 GB. I was told because it is a shared memory? :( Thank you in advance. :) Are you sure it's not 4 GB of RAM, but Windows showing only 3.5 GB ? On a 32 bits system, some of the addressing space must be mapped to IO board... historically, the IO were mapped at the top of the 4GB address space (of the 32 bits), alas with 4GB memory being now available, that trick does not work... or rather still work too well, and then some memory cannot be used as such. Please describe your motherboard & CPU (name them at least), and your version of windows. And how you get the measurement. Sorry. I meant to say 6 GB of RAM and only 2.5 show up in 32-bit Windows XP Pro SP3's About. Details: Intel i7 950 CPU (quad-core), three 2 GB of Kingston HyperX T1 Series 240-Pin DDR3 SDRAM 2000 (PC3 16000) Desktop Memory Model KHX2000C9AD3T1K3/6GX DDR3 RAM (6 GB total; 2.5 GB shown; will install a 64-bit OS later on to use it all) in 32-bit old, Windows XP Pro. SP3 (Internet Explorer v8 and DirectX 9.0c [June 2010]), EVGA X58 SLI (132-BL-E758; BIOS date 5/11/2010; v6.00 PG; release number IX58SZ64) motherboard, MSI R4870-T2D512 OC Radeon HD 4870 512 MB (using the very old ATI Catalyst driver v9.4 since newer drivers cause Windows XP's clock to slow down with DVI and rare, random hard lock ups with videos; VGA, with a DVI adapter through a KVM, and DVI directly to the same monitor [dual connections one at a time]; connected to a 21.5" Samsung SyncMaster T22B350ND HDTV, an used mid-tower Antec P180 ATX case, five 120 mm case fans, a side dual cooler fan to cool the case, two onboard RealTek Gigabit Ethernets (only use one) and onboard RealTek HD Audio, Antec HCG-620M (620 watts) power supply unit (PSU), a Hauppauge WinTV-HVR-2250 PCIe (dual tuners), a Broadband Technologies Air2PC-ATSC-PCI HDTV tuner cards (DVB; revision 2), LG HL-DT-ST DVDRAM GH24NS50 burner drive, Sony NEC Optiarc DVD-RW AD-7220S SATA burner drive, two internal 7200 RPM Seagate SATA hard disk drives (HDDs) [ST3320620AS 320 GB and ST310005N1A1AS-RK 1 TB], an optical USB three buttons mouse, and Logitech Z-2300 speakers (2.1 setup and analog). -- Quote of the Week: "Applied mathematics will always need pure mathematics, just as anteaters will always need ants." --Paul Halmos Note: A fixed width font (Courier, Monospace, etc.) is required to see this signature correctly. /\___/\ Ant(Dude) @ http://antfarm.home.dhs.org (Personal Web Site) / /\ /\ \ Ant's Quality Foraged Links: http://aqfl.net | |o o| | \ _ / Please nuke ANT if replying by e-mail privately. If credit- ( ) ing, then please kindly use Ant nickname and AQFL URL/link. |
How come RAM is taken away for video cards? Because of my videocard's VRAM?
On 1/18/2016 9:10 PM, Ant wrote:
Le Forgeron wrote: -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Le 17/01/2016 10:31, Ant a écrit : Like I have 3 GB of RAM, but Windows show 2.5 GB. I was told because it is a shared memory? :( Thank you in advance. :) Are you sure it's not 4 GB of RAM, but Windows showing only 3.5 GB ? On a 32 bits system, some of the addressing space must be mapped to IO board... historically, the IO were mapped at the top of the 4GB address space (of the 32 bits), alas with 4GB memory being now available, that trick does not work... or rather still work too well, and then some memory cannot be used as such. Please describe your motherboard & CPU (name them at least), and your version of windows. And how you get the measurement. Sorry. I meant to say 6 GB of RAM and only 2.5 show up in 32-bit Windows XP Pro SP3's About. Details: Intel i7 950 CPU (quad-core), three 2 GB of Kingston HyperX T1 Series 240-Pin DDR3 SDRAM 2000 (PC3 16000) Desktop Memory Model KHX2000C9AD3T1K3/6GX DDR3 RAM (6 GB total; 2.5 GB shown; will install a 64-bit OS later on to use it all) in 32-bit old, Windows XP Pro. SP3 (Internet Explorer v8 and DirectX 9.0c [June 2010]), EVGA X58 SLI (132-BL-E758; BIOS date 5/11/2010; v6.00 PG; release number IX58SZ64) motherboard, MSI R4870-T2D512 OC Radeon HD 4870 512 MB (using the very old ATI Catalyst driver v9.4 since newer drivers cause Windows XP's clock to slow down with DVI and rare, random hard lock ups with videos; VGA, with a DVI adapter through a KVM, and DVI directly to the same monitor [dual connections one at a time]; connected to a 21.5" Samsung SyncMaster T22B350ND HDTV, an used mid-tower Antec P180 ATX case, five 120 mm case fans, a side dual cooler fan to cool the case, two onboard RealTek Gigabit Ethernets (only use one) and onboard RealTek HD Audio, Antec HCG-620M (620 watts) power supply unit (PSU), a Hauppauge WinTV-HVR-2250 PCIe (dual tuners), a Broadband Technologies Air2PC-ATSC-PCI HDTV tuner cards (DVB; revision 2), LG HL-DT-ST DVDRAM GH24NS50 burner drive, Sony NEC Optiarc DVD-RW AD-7220S SATA burner drive, two internal 7200 RPM Seagate SATA hard disk drives (HDDs) [ST3320620AS 320 GB and ST310005N1A1AS-RK 1 TB], an optical USB three buttons mouse, and Logitech Z-2300 speakers (2.1 setup and analog). Still no answers? :( -- "Well, let me tell you, ants are the dominant insects. They make up as much as a quarter of the biomass of all insects in the world. They are the principal predators. They're the cemetery workers." --E. O. Wilson Note: A fixed width font (Courier, Monospace, etc.) is required to see this signature correctly. /\___/\ Ant(Dude) @ http://antfarm.ma.cx (Personal Web Site) / /\ /\ \ Ant's Quality Foraged Links: http://aqfl.net | |o o| | \ _ / If crediting, then use Ant nickname and AQFL URL/link. ( ) Axe ANT from its address if e-mailing privately. |
How come RAM is taken away for video cards? Because of my videocard's VRAM?
Ant wrote:
On 1/18/2016 9:10 PM, Ant wrote: Le Forgeron wrote: -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Le 17/01/2016 10:31, Ant a écrit : Like I have 3 GB of RAM, but Windows show 2.5 GB. I was told because it is a shared memory? :( Thank you in advance. :) Are you sure it's not 4 GB of RAM, but Windows showing only 3.5 GB ? On a 32 bits system, some of the addressing space must be mapped to IO board... historically, the IO were mapped at the top of the 4GB address space (of the 32 bits), alas with 4GB memory being now available, that trick does not work... or rather still work too well, and then some memory cannot be used as such. Please describe your motherboard & CPU (name them at least), and your version of windows. And how you get the measurement. Sorry. I meant to say 6 GB of RAM and only 2.5 show in 32-bit WinXP Pro SP3 Details: Intel i7 950 CPU (quad-core) (3) Kingston HyperX T1 DDR3-2000 (PC3 16000) (6 GB total; 2.5 GB shown) EVGA X58 SLI (132-BL-E758; BIOS date 5/11/2010; v6.00 PG; release number IX58SZ64) motherboard MSI R4870-T2D512 OC Radeon HD 4870 512 MB (using driver v9.4) two onboard RealTek Gigabit Ethernets (only use one) onboard RealTek HD Audio Hauppauge WinTV-HVR-2250 PCIe (dual tuners) a Broadband Technologies Air2PC-ATSC-PCI HDTV tuner cards (DVB; revision 2) Still no answers? :( This diagram shows how it works. What it doesn't describe in detail, is how the 750MB address area is used. https://blog.codinghorror.com/conten...980970c-pi.png So first of all, that machine would report "3.2GB free" on an x86 install. The 750MB or so, is used for bus addresses. Bus allocations traditionally, were done in 256MB chunks. I think on the Mac it might have been that way too, but I've forgotten the nomenclature. The question them becomes: 1) How many bus segments do you have ? Is one of the cards bridged, with a hidden PCI bus inside ? 2) Your video card uses 512MB. If you had *two* of those video cards, then that would account more or less exactly, for your reported 2.75GB free. 3) The Air2PC-ATSC-PCI is weird, in that it has an ASIC on board that makes the card look like a network device. Does that result in a unique allocation ? https://www.linuxtv.org/wiki/index.p...ir2PC-ATSC-PCI "As the FlexCop PCI interface chipset completely lacks any analog input functionality, this explains why these cards are barren of analog inputs, and also why they appear in dmesg or lspci output only as a "network controller". " So if you don't have two 4870 video cards, maybe that tuner has something to do with it. You can use Lavalys Everest V2.20.405 to get a nice table, to start your research with. The output looks like this, nice hex addresses. Note that this isn't really "perfect for the purpose", but you have to start somewhere. And other utilities aren't even getting close to this much info. I can't see a pattern here, to demonstrate 256MB for PCI, 256MB for PCI Express and so on. It's possible for bus segments needing just one byte of address space, to cause the BIOS to allocate another 256MB. https://s11.postimg.org/wjxsssdxv/lavalys_everest.gif Memory 00100000-BFFFFFFF Exclusive System board Doing the hex math on calculator, conv to dec, gives 3,220,176,895 bytes From Task Manager "Physical Memory (K)" 3144748 * 1024 = 3,220,221,952 No idea why there is a discrepancy... Purely a guess, Paul |
How come RAM is taken away for video cards? Because of my videocard's VRAM?
That machine seems like a Frankenstein and there's no wonder it has strange cobwebs like that. I understand the reasoning people want to clench to the very last bit of OS they enjoyed, but Windows XP SP3 needs to be ditched yesterday quick and in a hurry- especially if you're running it on a system that is i7 first-gen capable.
My first question at the matter is what does Windows say is available in RAM, which does the BIOS say is available? What does DXDIAG say is allocated for video adapters, and what does the BIOS say? |
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