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Radeon HD 4860

The history of the computer industry is full of examples of how "intermediate" solutions produced by one company or another, having been in the hands of overclockers, significantly increased their performance and showed quite good results. Many of you probably remember the times when the top models in the ATI line were Radeon 9700 Pro video cards. Then, every self-respecting "overclocker" tried to get this video card for personal use, and those who could not afford it, bought Radeon 9500 and tried to remake it into a senior model. On modern video cards, enabling additional shader processors or increasing the bit depth of the video card memory bus has become impossible, times are not the same anymore.

 

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So, according to AMD's idea, the Radeon HD 4860 occupies an intermediate position between the AMD Radeon HD 4850 and 4870 (which, in fact, follows from the model number). To achieve this, the manufacturer had to slightly reduce the number of stream processors and texture units of the Radeon HD 4860 compared to the HD 4850/4870. But the frequency GPU and the effective frequency of the video memory of the Radeon 4860 is noticeably higher than that of the Radeon HD 4850. Judging by all, despite the "loss" of part of the pipelines, the increased bandwidth of the video memory should allow the Radeon HD 4860 to outpace the Radeon HD 4850. Since the heart of the Radeon HD 4860 is 55 nm GPU RV770, we can quite expect good overclocking potential.

ATI Radeon HD 4850 Specifications

Name Radeon HD 4860
Core RV770PRO
Process technology (µm) 55
Transistors (millions) 956
Core frequency 700
Memory operating frequency (DDR) 3000 (1000)
Bus and memory type GDDR3 256-bit
Bandwidth (Gb/s) 95,2
Unified shader units 640
Unified shader unit frequency 700
TMU on conveyor 32
ROP 16
Shader Model 4.1
Fill Rate (Mtex/s) 25000
DirectX 10.1
Memory Capacity 512/1024
Interface PCIe 2.0

In most cases, the Radeon HD 4860 graphics card is faster than the AMD Radeon HD 4850, although the performance difference between them is small. In any case, even a slight performance advantage over the HD 4850 allowed AMD to place the new product between the Radeon HD 4850 and HD 4870 accelerators.