Written by
Fedja Drndarski
Monday, 16 March 2009 01:00
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 Whenever is new generation of CPUs presented, either by Intel or by AMD, besides high-end models always are presented models for users that don’t demand top-performance levels. There are various ways to “slow down” existing high-end core. One of those is “partial amputation” of L2 or L3 cache memory, or “total amputation” of one or more cores. In most cases faulty segments of CPU are disabled although in some cases this isn’t the case. Sometimes manufacturer disables perfectly operational segments of CPU so demands for such CPUs can be met. This means that even if you bought triple-core CPU, it doesn’t imply that you got 75% of fully functional quad-core. Same goes for L3 cache.
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Written by
Fedja Drndarski
Monday, 09 February 2009 01:00
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 AMD introduced support for DDR1 memory with first models of K8 CPUs in 2003 when that memory standard was on it rise to the peek. Those K8 cores nicely used all advantages of DDR1 memory standard including low access time. Result of integration of memory controller into CPU core and utilization of DDR1 memory standard was drastic performance increase compared to existing Athlon XP (K7) CPUs. Memory access time has dropped from 100ns to 40ns while improvement in memory bandwidth was utilization of 90-95% of theoretically achievable 100%.
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Written by
Fedja Drndarski
Monday, 12 January 2009 01:10
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 In last few years it looked like AMD lost its bearings in CPU market. No one expected that company, that is in constant transition, financial problems and without complete product portfolio, can produce interesting, equivalent and concurrent product. Phenom CPUs with K10 micro architecture didn’t claim speed crown from Intel, but they were significant step forward compared to “worn out” K8 cores.
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Written by
Vladimir Dimitrijevic
Wednesday, 31 December 2008 03:12
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 In the review of Nehalem CPU we haven’t said anything about gaming performances. Since new X58 chipset has support for nVIDIA SLI and ATi CrossFire, it would be great to see those performances, but that combination would come with hefty price tag at the moment, so we decided to test single graphics card system. If you disagree with our decision you can express your disagreement in our Forum using Discuss link at the end of this review and maybe, if there will be enough interests for this test, we will publish it in a separate review.
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Written by
Fedja Drndarski
Monday, 29 December 2008 02:09
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 With design of new K10 microarchitecture, by majority of critics, AMD bit off more than they can chew. In beginning K10 wasn’t designed for two or single core CPUs. For less cores it was necessary to take “rejected” CPUs and disable faulty cores, and that isn’t a cheap process. CPU with disabled core still has same surface area as quad core, and disabled part is totally useless. This can be profitable if yield is relatively low which will result in large quantities of “defected” CPUs. One of the reasons why we waited so long for KUMA core is low yield of Phenom CPUs which resulted in low amount of rejected CPUs that can be converted to Phenom X2.
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Written by
Vladimir Dimitrijevic
Monday, 15 December 2008 04:40
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 Long awaited Nehalem architecture got its official name: Core i7. We have tested two CPUs based on this architecture along with one motherboard based on X58 chipset also signed by Intel. But let’s cut to the chase and go straight to testing and results.
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Written by
Fedja Drndarski
Wednesday, 01 October 2008 01:00
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 AMD recently announced extension of its Black Edition processor lineup and as result dual cores K8 will be replaced with dual core and triple core K10 processors from 6000 and 8000 series. We got exclusive sample on test from AMD no more or less but triple core K10 from 8750 series with clock at 2.4GHz. Of course that we are talking about B3 revision made in 65nm technology process that keeps getting better and better thanks to recently introduced SB750 southbridge – chipset. SB750 has possibility of calibrating signal clock which allows free overclock for processors based on K10 cores for clocks higher than 3.2GHz.
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Written by
Fedja Drndarski
Friday, 23 May 2008 01:00
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 From the very beginning of computer epoch, opinion was that parallelization and everything connected to computers needs to be scaled to the second power, although it doesn’t matter if you have 1, 2 or even 73 cores. In any case, everything will work properly, unless we are talking about some old version of synthetic benchmark programs that doesn’t recognize processor with odd number of processors. If one worker will do the job for 24h, two will do for 12h and for three workers you can guess by yourself. This analogy goes for multi-thread software which can recognize multi-core processors.
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Written by
Djordje Kovacevic
Monday, 05 May 2008 01:00
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 This time we’ve compared two CPUs: Core2Quad Q9300 (this is the bottom model of current lineup) and Core2Extreme QX9650 (the top model of current lineup). We have experimented with QX9650, bringing down its multiplier so we got whole palette of Core2Quad processors from Q9x50 generation. To make evaluation of performances we have included in test even Core2Extreme QX6850 which is the top model Quad CPU from previous generation (65nm).
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Written by
Djordje Kovacevic
Monday, 28 April 2008 01:00
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 Users familiar with AMD Black Edition brand already know what kind of CPU we got in our test lab and for those unfamiliar with BE AMD CPUs we are going to explain it. Back in the past AMD had prestigious FX series of CPUs which were very expensive but those were made from best parts of wafer and had unlocked multiplier. Now AMD has CPU series called “Black Edition” and it has very similar characteristics to FX series, but with changed price politics.
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