AMD Phenom II X6 1075T

The AMD Phenom II X6 1075T is a desktop processor built around the K10 architecture in AMD's Thuban generation. It uses AMD Socket AM3, contains six cores and six threads, runs at a 3.00 GHz base clock with a 3.50 GHz boost clock, and carries a 125W TDP. Released 2010-09-20 and now listed as end-of-life, this six-core part occupies a narrow performance band in the current benchmark database.

Platform and Compatibility

The Phenom II X6 1075T is designed for AMD Socket AM3, putting it in a platform family that spans both DDR2 and DDR3 memory support. Memory is accessed through a dual-channel bus rated at 21.3 GB/s, and ECC memory is supported. That memory flexibility is board-dependent: an AM3 motherboard with DDR2 slots uses the DDR2 path, while a board with DDR3 slots uses the DDR3 path. The processor itself lists both memory types, so the exact platform memory behavior depends on the surrounding motherboard.

The CPU is built by GlobalFoundries on a 45nm process, with 904 million transistors on a 346 mm² die. It belongs to the K10 architecture and the Thuban codename, with the generation listed as Phenom II X6. The PCIe interface is Gen 2. For display output, integrated graphics are available only as a chipset feature on certain motherboards, rather than as a processor function. ECC support and the dual memory-generation option make this an unusually flexible AM3 part for its time, though the production status is end-of-life and the multiplier is locked, limiting overclocking headroom.

The platform also identifies this as a desktop-segment product. The locked multiplier means the user cannot adjust the CPU ratio freely, so the 3.00 GHz base and 3.50 GHz boost clocks are the primary operating points in normal configuration. With Socket AM3, PCIe Gen 2, and dual memory support, the 1075T is a mature AM3-era component rather than a forward-looking platform start.

Power and Thermals

The 125W TDP places the Phenom II X6 1075T in the high-power desktop class. A processor with this TDP requires a cooling solution designed for that heat load; the implication is a capable air cooler or equivalent thermal solution, not a low-profile or low-power cooling approach. The 45nm process, 904-million-transistor count, and 346 mm² die size all factor into the thermal picture. The die is large by the standards of the time listed in the data, and the 125W TDP reflects the power envelope of the six-core design.

The locked multiplier also affects how thermals can be managed. Because the CPU ratio is not unlocked, the 3.00 GHz base and 3.50 GHz boost clocks are the expected sustained and peak operating states. The data does not include a separate measured power draw, so the TDP of 125 is the reference point for selecting a cooler. For a desktop part in this category, the cooling requirement is correspondingly more substantial than mainstream lower-TDP chips.

Single-Thread vs Multi-Thread Behavior

The 1075T has six cores and six threads, so its multi-thread results are driven by six simultaneous execution threads rather than by thread-doubling technology. The Cinebench R20 results show a single-core score of 176 and a multi-core score of 1249. That is a wide separation. The multi-core result is far above the single-core result, indicating that the processor scales well when all six cores are active.

Cinebench R23 repeats the pattern: single-core scores 420, while multi-core scores 2975. The R15 multi-core score is 299, adding another multi-thread data point to the set. The single-thread scores are modest, reflecting the 3.00 GHz base and 3.50 GHz boost clocks in a 45nm architecture. For lightly threaded workloads, the processor will rely on that boost clock and on the per-core cache layout: 128 KB of L1 per core and 512 KB of L2 per core. For threaded workloads, the 6 MB shared L3 gives all six cores a common pool to work from.

The real-workload split is straightforward. Applications that can distribute work across six threads should see a much stronger result than the single-core scores suggest. Applications limited to one or two threads will land closer to the single-core side of the data. The memory bus, dual-channel with 21.3 GB/s, is sufficient for the six-core layout but also fixed by the platform, so scaling is bounded by that memory bandwidth in data-heavy threaded tasks.

How It Compares

Intel Core i3-4160: This nearest rival posts an average score of 1027, with a delta of -0.3% for the Phenom. The two processors land within a rounding step of one another in the aggregate benchmark average.

AMD Ryzen Embedded V1202B: The embedded AMD part also averages 1027, and the delta is again -0.3%. The desktop Thuban chip and this embedded Ryzen part occupy essentially the same performance tier in the database.

Intel Core i5-4300M: This mobile Core part averages 1020, and the Phenom's delta is +0.3%. The 1075T sits just ahead of the i5-4300M in the aggregate average score.

Intel Core i7-975: The highest-scoring rival in this nearest-rival group averages 1030, with a delta of -0.5% for the Phenom. The 1075T is a half-percent behind the Core i7-975, making that gap the largest within the immediate competitive cluster.

Benchmark Performance

The aggregate average benchmark score for the Phenom II X6 1075T is 1024, and it sits in the 27th percentile of all CPUs in the benchmark database. That percentile position puts it below the majority of the database, but the nearest-rival data shows how tight this cluster is. The Intel Core i3-4160 and AMD Ryzen Embedded V1202B both average 1027, a delta of -0.3% from the Phenom. The Intel Core i5-4300M averages 1020, a delta of +0.3% in the Phenom's favor. The Intel Core i7-975 averages 1030, a delta of -0.5%.

In the multi-thread Cinebench tests, the 1075T scores 299 in R15 multi-core, 1249 in R20 multi-core, and 2975 in R23 multi-core. The R20 single-core result is 176, and the R23 single-core result is 420. The multi-core results are substantially higher than the single-core results across both R20 and R23, confirming that the six-core configuration is the main asset.

The nearest-rival deltas are all within 0.5%, so the 1075T is not an outlier against its immediate competition. The i3-4160 and Ryzen Embedded V1202B are effectively identical in average score. The i5-4300M is a slightly lower average. The i7-975 is the only rival in the group that holds a measurable edge, and that edge is just 0.5%. The 27th-percentile placement, meanwhile, shows that this AM3-era part sits far below current leading processors, but within its own peer group the data is extremely close.

The Cinebench results also show that the processor's single-thread scores are low relative to its multi-thread scores. The R20 single-core score of 176 versus the R20 multi-core score of 1249, and the R23 single-core score of 420 versus the R23 multi-core score of 2975, both point to a design optimized for parallel throughput rather than raw per-core speed. In the context of the nearest rivals, the 1024 average score does not separate itself from the 1020-1030 range. The Phenom II X6 1075T is therefore a six-thread desktop part that competes on multi-core scaling while staying within a tight band of similarly-scoring CPUs.