karta graficzna do 300,-

**Posty:** 61 · przez **adziu881** 27 Sie 2007, 11:01

Poradźcie proszę, jaką warto kupić ? Moja płyta główna to P4VXAD (AGP 4x). Na co zwracać uwagę przy zakupie itd. Dziękuję.

**Posty:** 10264 · przez **Mike** 27 Sie 2007, 11:14

Nic lepszego w tym przedziale cenowym i na AGP niż ta => Palit GeForce 7300GT Sonic 256MB /128bit/ TV&DVI-out (AGP)

[ Dodano: Dzisiaj o 11:16 ]

adziu881 napisał(a):Na co zwracać uwagę przy zakupie

głównie to na to, żeby miała pamięci DDR3 oraz chłodzenie aktywne (wiatraczek), a nie pasywne (sam radiator)

**Posty:** 3874 · przez **Wojtasgls** 27 Sie 2007, 14:25

tu jest troszke taniej to co podal mike013:
http://www.allegro.pl/item228761470_palit_geforce_7300_gt_256mb_ddr3_agp_sonic_gw_24.html

ja polecam cos takiego :wink:

http://www.allegro.pl/item228935029__geforce_7600_gs_galaxy_256mb_gw_12_bcm_.html

**Posty:** 61 · przez **adziu881** 27 Sie 2007, 14:30

hmm...mam w sumie paździerzowy zasilacz (300W), udźwignąłby np. GF 6600 GT, albo te, które Wy podaliście?

**Posty:** 10223 · przez **Precel** 27 Sie 2007, 14:43

marka i moc w watach (w)
podaj tez pelen config kompa

btw GF 6600 GT jest mniej wydajny niz 7300gt

**Posty:** 61 · przez **adziu881** 27 Sie 2007, 15:09

Zasilacz: Codegen 300W

--------[ EVEREST Home Edition (c) 2003-2005 Lavalys, Inc. ]------------------------------------------------------------

Wersja EVEREST v2.20.405/pl
Strona domowa http://www.lavalys.com/
Typ raportu Kreator raportów
Komputer ADRIAN (Adrian)
Generator raportu Adziu
System operacyjny Microsoft Windows XP Professional 5.1.2600 (WinXP Retail)
Data 2007-08-27
Czas 14:55

--------[ Podsumowanie ]------------------------------------------------------------------------------------------------

Komputer:
System operacyjny Microsoft Windows XP Professional
Dodatek service pack systemu operacyjnego -
DirectX 4.09.00.0904 (DirectX 9.0c)
Nazwa komputera ADRIAN (Adrian)
Nazwa użytkownika Adziu

Płyta główna:
Typ procesora Intel Pentium 4, 1600 MHz (16 x 100)
Nazwa płyty głównej ECS P4VXAD(+)/P4VXAS(2)/P4VXMD/P4VXMS / Matsonic MS9107C / Kobian KOB P4X266 NFSX/P4X266 WFSX/P4X266a NDSUX/P4X333 NDSX
Mikroukład płyty głównej VIA VT8753/A/E Apollo P4X266/A/E
Pamięć fizyczna 256 MB (PC2100 DDR SDRAM)
Typ BIOS'u Award Modular (10/12/01)
Port komunikacyjny Port komunikacyjny (COM1)
Port komunikacyjny Port drukarki ECP (LPT1)

Ekran:
Karta wideo NVIDIA GeForce2 MX/MX 400 (64 MB)
Akcelerator 3D nVIDIA GeForce2 MX/MX 400
Monitor LG 775FT [17" CRT] (12011428)

Multimedia:
Karta dźwiękowa C-Media CMI8738/C3DX Audio Device

Magazyn:
Kontroler IDE Kontroler VIA Bus Master IDE
Napęd dyskietek Stacja dyskietek
Dysk fizyczny ST340810A (40 GB, 5400 RPM, Ultra-ATA/100)
Napęd dysków optycznych HL-DT-ST DVDRAM GSA-H44N
Napęd dysków optycznych LITE-ON LTR-52246S (52x/24x/52x CD-RW)
Status dysków SMART OK

Partycje:
C: (NTFS) 4157 MB (465 MB wolne)
D: (FAT32) 26986 MB (4159 MB wolne)
E: (NTFS) 5004 MB (795 MB wolne)
F: (FAT32) 1984 MB (71 MB wolne)
Rozmiar całkowity 38131 MB (5490 MB wolne)

Urządzenia wejściowe:
Klawiatura Standardowa klawiatura 101/102 klawisze lub Microsoft Natural Keyboard PS/2
Mysz Mysz zgodna z HID

Sieć:
Karta sieciowa Karta Realtek RTL8139 Family PCI Fast Ethernet NIC
Urządzenia zewnętrzne:
Drukarka hp deskjet 3500 series
Kontroler USB1 VIA VT83C572 PCI-USB Controller
Kontroler USB1 VIA VT83C572 PCI-USB Controller
Kontroler USB1 VIA VT83C572 PCI-USB Controller
Urządzenie USB Rodzajowy koncentrator USB
Urządzenie USB Uniwersalna drukarka USB
Urządzenie USB Urządzenie USB interfejsu HID

Problemy i Sugestie:
Problem Jest tylko 4% wolnego miejsca na dysku F:.

--------[ Debug - PCI ]-------------------------------------------------------------------------------------------------

B00 D00 F00: VIA VT8753/A/E Apollo P4X266/A/E Chipset - System Controller

Offset 00: 06 11 28 31 06 00 10 22 01 00 00 06 00 08 00 00
Offset 10: 08 00 00 E8 00 00 00 00 00 00 00 00 00 00 00 00
Offset 20: 00 00 00 00 00 00 00 00 00 00 00 00 19 10 73 0A
Offset 30: 00 00 00 00 A0 00 00 00 00 00 00 00 00 00 00 00
Offset 40: 00 18 88 80 82 44 00 00 18 18 88 80 C2 44 00 00
Offset 50: C8 5E CF 88 44 05 10 10 60 00 08 10 10 10 10 10
Offset 60: 02 EA 03 20 E6 99 40 28 41 4D 86 50 40 04 00 00
Offset 70: 82 C8 00 01 00 01 10 00 00 00 00 00 00 00 00 03
Offset 80: 0F 61 00 00 C0 70 00 00 03 00 01 00 00 00 00 00
Offset 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset A0: 02 C0 20 00 07 02 00 1F 04 01 00 00 2F 02 04 00
Offset B0: 78 99 18 99 40 00 00 00 40 00 00 00 00 00 00 8C
Offset C0: 01 00 02 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset D0: 00 00 00 00 00 00 00 00 11 11 11 11 B8 3A 12 00
Offset E0: 00 00 00 00 00 00 01 00 00 00 00 00 00 00 00 00
Offset F0: 00 00 00 00 00 00 01 00 00 00 00 00 00 00 00 00

B00 D01 F00: VIA AGP Controller

Offset 00: 06 11 91 B0 07 00 30 22 00 00 04 06 00 00 01 00
Offset 10: 00 00 00 00 00 00 00 00 00 01 01 00 F0 00 00 00
Offset 20: 00 EC F0 ED 00 E0 F0 E7 00 00 00 00 00 00 00 00
Offset 30: 00 00 00 00 80 00 00 00 00 00 00 00 00 00 0C 00
Offset 40: 83 C7 00 44 24 72 00 00 00 00 00 00 00 00 00 00
Offset 50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 80: 01 00 02 02 00 00 00 00 00 00 00 00 00 00 00 00
Offset 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset A0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset B0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset C0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset D0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset E0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset F0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

B00 D09 F00: Realtek RTL8139 PCI Fast Ethernet Adapter [A/B/C]

Offset 00: EC 10 39 81 05 00 90 02 10 00 00 02 00 80 00 00
Offset 10: 01 D0 00 00 00 00 00 EE 00 00 00 00 00 00 00 00
Offset 20: 00 00 00 00 00 00 00 00 00 00 00 00 EC 10 39 81
Offset 30: 00 00 00 00 50 00 00 00 00 00 00 00 0C 01 20 40
Offset 40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 50: 01 00 C2 F7 00 00 00 00 00 00 00 00 00 00 00 00
Offset 60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset A0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset B0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset C0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset D0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset E0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset F0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

B00 D0C F00: C-Media CMI8738/C3DX Audio Device

Offset 00: F6 13 11 01 05 00 10 02 10 00 01 04 00 20 00 00
Offset 10: 01 D4 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 20: 00 00 00 00 00 00 00 00 00 00 00 00 F6 13 11 01
Offset 30: 00 00 00 00 C0 00 00 00 00 00 00 00 0B 01 02 18
Offset 40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset A0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset B0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset C0: 01 00 02 06 00 00 00 00 00 00 00 00 00 00 00 00
Offset D0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset E0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset F0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

B00 D11 F00: VIA VT8233C PCI-ISA Bridge

Offset 00: 06 11 74 30 87 00 10 02 00 00 01 06 00 00 80 00
Offset 10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 20: 00 00 00 00 00 00 00 00 00 00 00 00 19 10 73 0A
Offset 30: 00 00 00 00 C0 00 00 00 00 00 00 00 00 00 00 00
Offset 40: 44 00 F0 0B 00 00 00 00 0C 20 00 00 04 00 0A 08
Offset 50: C1 0D 09 00 00 B0 0C 30 03 00 00 00 00 00 00 00
Offset 60: 00 00 00 00 00 00 00 04 00 00 00 00 00 00 00 00
Offset 70: 19 10 73 0A 00 00 00 00 00 00 00 00 20 00 00 00
Offset 80: 20 84 59 00 F2 30 00 00 01 04 00 00 00 18 00 00
Offset 90: 00 0F 24 88 C0 C0 02 00 00 71 20 00 00 00 00 00
Offset A0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset B0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset C0: 01 00 02 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset D0: 01 05 01 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset E0: 00 00 00 00 18 08 00 00 00 00 00 00 00 00 00 00
Offset F0: 00 00 00 00 00 00 21 00 00 00 00 00 00 00 00 00

B00 D11 F01: VIA VT82C571 IDE Controller

Offset 00: 06 11 71 05 07 00 90 02 06 8A 01 01 00 20 00 00
Offset 10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 20: 01 D8 00 00 00 00 00 00 00 00 00 00 06 11 71 05
Offset 30: 00 00 00 00 C0 00 00 00 00 00 00 00 FF 01 00 00
Offset 40: 0B F2 09 05 18 1C C0 00 20 20 20 20 FF 00 B6 B6
Offset 50: F4 F1 17 F0 0C 00 00 00 A8 A8 A8 A8 00 00 00 00
Offset 60: 00 02 00 00 00 00 00 00 00 02 00 00 00 00 00 00
Offset 70: 02 01 00 00 00 00 00 00 02 01 00 00 00 00 00 00
Offset 80: F8 BE B7 01 00 00 00 00 98 EB AF 01 00 00 00 00
Offset 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset A0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset B0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset C0: 01 00 02 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset D0: 06 00 71 05 06 11 71 05 00 00 00 00 00 00 00 00
Offset E0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset F0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

B00 D11 F02: VIA VT83C572 PCI-USB Controller

Offset 00: 06 11 38 30 07 00 10 02 1B 00 03 0C 08 20 00 00
Offset 10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 20: 01 DC 00 00 00 00 00 00 00 00 00 00 25 09 34 12
Offset 30: 00 00 00 00 80 00 00 00 00 00 00 00 03 04 00 00
Offset 40: 00 02 01 00 02 00 36 F4 00 00 00 00 00 00 00 00
Offset 50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 60: 10 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 80: 01 00 02 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset A0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset B0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset C0: 00 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset D0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset E0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset F0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

B00 D11 F03: VIA VT83C572 PCI-USB Controller

Offset 00: 06 11 38 30 07 00 10 02 1B 00 03 0C 08 20 00 00
Offset 10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 20: 01 E0 00 00 00 00 00 00 00 00 00 00 25 09 34 12
Offset 30: 00 00 00 00 80 00 00 00 00 00 00 00 03 04 00 00
Offset 40: 00 02 01 00 C2 00 30 00 00 00 00 00 00 00 00 00
Offset 50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 60: 10 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 80: 01 00 02 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset A0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset B0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset C0: 00 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset D0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset E0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset F0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

B00 D11 F04: VIA VT83C572 PCI-USB Controller

Offset 00: 06 11 38 30 07 00 10 02 1B 00 03 0C 08 20 00 00
Offset 10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 20: 01 E4 00 00 00 00 00 00 00 00 00 00 25 09 34 12
Offset 30: 00 00 00 00 80 00 00 00 00 00 00 00 03 04 00 00
Offset 40: 00 02 01 00 C6 00 30 00 00 00 00 00 00 00 00 00
Offset 50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 60: 10 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 80: 01 00 02 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset A0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset B0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset C0: 00 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset D0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset E0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset F0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

B01 D00 F00: nVIDIA GeForce2 MX/MX400 Video Adapter

Offset 00: DE 10 10 01 07 00 B0 02 B2 00 00 03 00 F8 00 00
Offset 10: 00 00 00 EC 08 00 00 E0 00 00 00 00 00 00 00 00
Offset 20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 30: 00 00 00 00 60 00 00 00 00 00 00 00 0B 01 05 01
Offset 40: 00 00 00 00 02 00 20 00 17 00 00 1F 04 01 00 1F
Offset 50: 01 00 00 00 01 00 00 00 CE D6 23 00 0F 00 00 00
Offset 60: 01 44 02 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset A0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset B0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset C0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset D0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset E0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset F0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

--------[ Debug - Video BIOS ]------------------------------------------------------------------------------------------

C000:0000 U.^.K7400.L.w.VIDEO .......+..IBM VGA Compatible........03/22/01
C000:0040 ..........................+..+PMIDX.[............[.NV..........
C000:0080 ......V...f.......P..#q(A...................?>76...>. ..........
C000:00C0 ...........n.t.......z.............f....PCIR............^.......
C000:0100 NVIDIA GeForce2 MX-400 VGA BIOS.................................
C000:0140 .................Version 3.11.00.18.00 ...Copyright (C) 1996-200
C000:0180 0 NVidia Corp......0MB RAM................ ...$...(.............
C000:01C0 ................................................................
C000:0200 .............................. ...$...(.........................
C000:0240 .........................................@\D...............CP.!.
C000:0280 ....D.....7.........0...0..................@\D...............3P.
C000:02C0 !.....D.....7.........0...0..................@\D...............3
C000:0300 P.!.....D.....7.........0...0..................@\D..............
C000:0340 .3P.!.....D.....7.........0...0..................@\D............
C000:0380 ...3P.!.....D.....7.........0...0..................@\D..........
C000:03C0 .....3P.!.....D.....7.........0...0..................@\D........

--------[ Debug - Unknown ]---------------------------------------------------------------------------------------------

Optical HL-DT-ST DVDRAM GSA-H44N

------------------------------------------------------------------------------------------------------------------------

The names of actual companies and products mentioned herein may be the trademarks of their respective owners.

**Posty:** 725 · przez **konrad7890** 27 Sie 2007, 15:10

Zasilacz: Codegen 300W

Do wymiany :!:

Jeżeli masz kasę to jakiś Modecom MC lub Chieftec. Jeżeli nie to Fortron z allegro powinien wystarczyć. :wink:

**Posty:** 61 · przez **adziu881** 27 Sie 2007, 15:15

Chyba wadliwy jest ten Codegen, że tak ludzie go krytykują ;], dzięki, pozdrawiam. Jeszcze tylko, o jakiej mocy najlepiej?

**Posty:** 725 · przez **konrad7890** 27 Sie 2007, 15:31

http://allegro.pl/item228731578_zasilacz_atx_fortron_350w_2_lata_gwarancji.html

Taki powinien wystarczyć. A jeżeli masz więcej kasy to:

http://www.apollo.pl/store/show_detail/46/17219 :wink:

**Posty:** 4616 · przez **Lecter** 27 Sie 2007, 16:41

adziu881 napisał(a):hmm...mam w sumie paździerzowy zasilacz (300W), udźwignąłby np. GF 6600 GT

6600GT jest jeszcze bardziej prądożerny :wink:

**Posty:** 61 · przez **adziu881** 03 Wrz 2007, 13:47

http://allegro.pl/item239064567_powercolor_9600pro_256mb_ddr2_gamefx_2_8ns_hynix_.html

co sądzicie o tej karcie, szukam jednak dobrej karty do 200zł

**Posty:** 3117 · przez **Sylwek 17** 03 Wrz 2007, 13:58

adziu881 do 200zł poszukaj na allegro Radeonów 9800Pro(troche droższe)
Co do tej karty z Twojego linka to swego czasu była to bardzo dobra karta.

Aha i od tej aukcji trzymaj się z daleka już widać że autor tej aukcji jest nieuczciwy(no chyba że screeny pomylił)pisze że karta ma pamięci hinix 2.8ns a na zdjęciu karty widzimy elixir-y prawdopodobnie 5ns.
No i te screeny z gier ... raczej nie były robione na tej karcie(napewno niewszystkie).

karta graficzna do 300,-

karta graficzna do 300,-

Kto jest na forum