Average Bench 40.3%. Average Bench 28.4%. ADVERTISEMENT. The Intel Core 2 Duo E8400 is amongst the fastest of the Core 2 Duo range of now nearly ten year old CPUs. The E8400 is included in our group tests simply as a reference point due to its huge success back in its day. Running at a clock speed of 3.0 GHz the E8400 has an effective speed of Wolfdale is the code name for a processor from Intel that is sold in varying configurations as Core 2 Duo, Celeron, Pentium and Xeon. In Intel's Tick-Tock cycle, the 2007/2008 "Tick" was Penryn microarchitecture, the shrink of the Merom microarchitecture to 45 nanometers as CPUID model 23. This replaced the Conroe processor with Wolfdale . Intel Celeron 2957U. The Intel Celeron 2957U is an entry level, ULV (ultra low voltage) dual-core processor clocked at 1.4 GHz which has been presented in Q1 2014. It is based on the Haswell Notes on Intel Core 2 Duo E8400. Also available as an embedded processor. Binary compatible with 32-bit x86 software. Bus frequency is 333 MHz. Because the processor uses Quad Data Rate bus the effective bus speed is 1333 MHz. Part AT80570PJ0806M is manufactured in halide-free package. BXC80570E8400 is a Chinese version. Seagate Barracuda 2TB (2016) $50. G.SKILL Trident Z DDR4 3200 C14 4x16GB $363. SanDisk Ultra Fit 32GB $16. Based on 19,019 user benchmarks for the Intel Celeron N4000 and the Core2 Duo T6400, we rank them both on effective speed and value for money against the best 1,429 CPUs. SanDisk Extreme 32GB $28. Seagate Barracuda 2TB (2016) $50. G.SKILL Trident Z DDR4 3200 C14 4x16GB $361. SanDisk Ultra Fit 32GB $16. Based on 4,900 user benchmarks for the Intel Celeron Dual Core T3300 and the Core2 Duo T7500, we rank them both on effective speed and value for money against the best 1,429 CPUs. The Xeon (admittedly the slightly faster 2.5 Ghz) was 50% higher in "Result". (Intel Core 2 Duo E8400, 3 Ghz) 30.9 29.5 2 1 CELSIUS M470, Intel Xeon W3505 (2.5 Ghz) 47.4 45.9 2 1. – Clay Nichols. Sep 25, 2009 at 0:12. I've updated my answer to flesh out what the SPEC results mean. – wfaulk. Sep 25, 2009 at 14:31. Add a comment. Intel Celeron N5105. Comparison between Intel Celeron N5100 and Intel Core 2 Duo with the specifications of the processors, the number of cores, threads, cache memory, also the performance in benchmark platforms such as Geekbench, Passmark, Cinebench or AnTuTu. PmieF.