Corei7 x58 Bios Guide

Intel ® Core i7 is a brand new archit ecture featur featur ing the QPI QPI bus whi ch replace r eplaces s the th e FSB FSB bus. So, how d oes thi s affect affect o verclocking? The Core Core i7 processor’s frequency is Bc Bclk lk * CPU CPU multip mul tip lier. For ex. Intel’s i7 965 965 XE, XE, rated rated 3.2Ghz frequency is 133mhz ( Bclk ) * 24 (cpu ratio). With GIGAB GIGABYT YTE’s E’s EX58 EX58 Series Series BIOS, users us ers can adj ust us t CP CPU U Clo Clock ck Ra Rati ti o and CPU Host Clock Frequency (Bclk) in or der to c hange the CPU CPU’s ’s t otal fr equency. The The higher high er the number, the high er the CPU CPU Clock and better better performance by overclockin g. Under BIOS BIOS you can overcloc ov erclock k the t he Host Frequency fro m 1MHz 1MHz up t o 1200M 1200MHz Hz,, and and the CPU CPU Cloc Cloc k Ratio f rom 1x up to 44x. 44x. Adjusti Adju sti ng CPU Host Frequency (Bclk) wi ll also change the QPI QPI Bus, Uncore Frequency Frequency & Memor Memor y Frequency. Find Find ing the best b alance alance between “ CPU CPU Host Host Frequency, Frequency, QPI QPI Frequency, Frequency, Unco Unco re Freq Freq & Memory Memory Frequency will obt ain the best best overclock ov erclock ing results r esults .

28x 29x 30x CPU Clo CPU Clock ck Ra Rati tio o CPU CP U Frequency Frequenc y

[ 24x] 3.20GHz ( 133x24)

CPU Host Clock Control CPU CP U Host Frequenc Frequency y ( MH MHz z)

[ Enable] 133 13 3

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CPU Clo CPU Clock ck Ra Rati tio o CPU CP U Frequency Frequenc y

[ 24 24x] x] 3.60GHz ( 150x24)

CPU Host Clock Control CPU Hos Hostt Frequ Frequenc ency y ( MHz )

[ Enable] 150





M.I. M.I.T T > Advanced Ad vanced CPU CPU featu features res all allow ows s users us ers to turn tu rn on fea f eatu tures res of th e Intel Cor Core e i7 processor proc essor includi inc ludingTurbo ngTurbo Mode ( overclock), overclo ck), power saving s and VT technolog y. GIGABYT GIGABYTE’s E’s BIOS also allows u sers to turn o ff cor es. CPU Clo CPU Clock ck Ra Rati tio o CPU CP U Frequency Frequenc y

[ 24 24x] x] 3.60GHz ( 150x24)

CPU CP U Tur Turbo bo Mode

[ Enabled ]

CPU CP U Cor Cores es Enabled Enabl ed

[ ALL ]

CPU CP U Multi-T Mult i-Thr hrea eadi ding ng

[ Enabled ]

CPU Enh Enhanc anced ed Halt ( C1E C1E )

[ Enabled ]





Blo omf ield is Intel’s new generatio generatio n Core archit ecture with s upport upp ort f or VRD VRD 11.1 11.1 power pow er savings saving s and Intel’s new Turbo Mode featur featur e. If Turb Turbo o Mode is enabled enabled in B IOS, IOS, when the pro cessor i s under un der loadin g, a thermal senso r wil l auto detect t he temperatur temperatur e and and TDP TDP (The (Thermal rmal Desig Desig n Point ) of the pro cessor. cessor . If If temperature is lower low er than th an marked TDP TDP (XE (XE 965 965 130 130W) W),, then Turb o Mode wi ll auto overclo o verclock ck t he active co res based on TDP and processor pr ocessor usage. If the applic ation n eeds eeds 2 cor es, and and t emperatur emperatur e is below TDP, TDP, Turbo Mode will reallo reallo cate the power envelope envelope from the 2 inactive inactive cores and redistr redistr ibut e (overclock) (overclock) to the active cores. cores. If If the application ju st needs needs 1 core, then the power envelope from t he 3 inacti ve cores wil l be reallo reallocated, cated, resulting result ing in an even even hig her overclo ck. If this f eatur eatur e is disabled, when temperature is below TDP, TDP, Core Core speed will r emain emain the t he same.





With this t his BIOS BIOS feature, feature, users are able able to change the Unco Uncore re frequency frequency by manually manually changing the th e mult mu ltipl ipl ier. Unc Uncor ore e relates to L3 cache, QPI QPI and IMC. IMC. Higher Uncor e frequencies fr equencies wi ll help h elp to improv imp rove e perfo performance rmance and and also will wil l ra r aise Memory Memory Clock and QPI BUS. BUS. Uncore Uncor e Fre Frequenc quency y = BCLK X Unc Uncore ore Mul Multi ti , when wh en BCLK BCLK is i s 133M 133MHz Hz and the th e Multi Mult i is x 12, 12, Uncor e frequency will wil l be 16 1600mhz. 00mhz. Users Users can c an change the mult i from f rom x12 to 30x 30x manua m anually lly.. [ Auto] Uncor e Fre Uncore Frequ que enc ncy y Uncore Uncor e Frequ Freque enc ncy(M y(Mhz) hz) 2667

Uncore Uncor e Fre Frequ que enc ncy y A u t o . . . . . [ . ] Au X12 [ ]

C O R E

C O R E

C O R E

L3 Cach Cache e

C O R E





The QPI QPI bus is i s base b ased d on Bclk Bc lk and QPI mult mu lti. i. When When overclo cking cki ng Bclk, Bc lk, the QPI QPI Bus w ill also in crease. crease. Increa Incr easi sing ng QPI PLL & VTT volt vo ltage ages s wil w illl raise r aise QPI QPI frequency frequency duri ng overclocking. Default Default Bclk Bcl k is 133mhz, 33mhz, if the QPI QPI mult i is x48, then QPI bus bu s wil w illl be b e 6.3 6.3GT GT/s /s (133mhz*4 (133mhz*48) 8).. Therefor Therefor e, the th e transpor transp ortt data d ata rate rate is 12.8 12.8GB/s GB/s (6.3 (6.3GT GT/s /s * 16bi 16bit/8) t/8).. If us ers want w ant to t o rea r each ch higher hi gher Bcl k, droppi ng QPI QPI multi mul ti to t o x36 or x44 will wil l help. [ Auto] QPII Link QP Lin k Speed 6400 QPII Link QP Li nk Spee Speed d (M (MT) T)

Bclk

X36 X44 X48

QPI











System Memor Memory y Multi pl plier ier (SPD) (SPD)

Performance Enhance System Syst em Memory Memory Multi Multipl plier ier (S (SPD PD)) Memory Frequency (MHz) DRAM DR AM Timi Timing ng Se Select lectable able (S (SPD PD))

[ Turbo] [ 10.0 ] 1333 [ Manual ]

Memory Frequency (MHz)

[ 6.0 ] [ 8.0 ] [ 10.0 ] [ 12.0 ] 800 1066 1600 1333 [ 14.0 ] [ 16.0 ] [ 18.0 ]













Increasing th is vo ltage may Increasing may help overclocking cpu frequency Increasing t his voltage, Increasing voltage,may may help overclocking ove rclocking cpu bcl k clock

Corei7 x58 Bios Guide

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